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captures-before-load.ll
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='dse' -S %s | FileCheck %s
declare void @escape_and_clobber(i32*)
declare void @escape_writeonly(i32*) writeonly
declare void @clobber()
define i32 @test_not_captured_before_load_same_bb(i32** %in.ptr) {
; CHECK-LABEL: @test_not_captured_before_load_same_bb(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
}
define i32 @test_not_captured_before_load_same_bb_escape_unreachable_block(i32** %in.ptr) {
; CHECK-LABEL: @test_not_captured_before_load_same_bb_escape_unreachable_block(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
; CHECK: unreach:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 0
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
unreach:
call void @escape_and_clobber(i32* %a)
ret i32 0
}
define i32 @test_captured_and_clobbered_after_load_same_bb_2(i32** %in.ptr) {
; CHECK-LABEL: @test_captured_and_clobbered_after_load_same_bb_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_and_clobber(i32* %a)
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_captured_after_load_same_bb_2_clobbered_later(i32** %in.ptr) {
; CHECK-LABEL: @test_captured_after_load_same_bb_2_clobbered_later(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_writeonly(i32* %a)
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_captured_and_clobbered_before_load_same_bb_1(i32** %in.ptr) {
; CHECK-LABEL: @test_captured_and_clobbered_before_load_same_bb_1(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
call void @escape_and_clobber(i32* %a)
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_captured_before_load_same_bb_1_clobbered_later(i32** %in.ptr) {
; CHECK-LABEL: @test_captured_before_load_same_bb_1_clobbered_later(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
call void @escape_writeonly(i32* %a)
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_captured_before_load_same_bb_2(i32** %in.ptr) {
; CHECK-LABEL: @test_captured_before_load_same_bb_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
call void @escape_writeonly(i32* %a)
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_not_captured_before_load_same_bb_clobber(i32** %in.ptr) {
; CHECK-LABEL: @test_not_captured_before_load_same_bb_clobber(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
call void @clobber()
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
}
define i32 @test_captured_before_load_same_bb(i32** %in.ptr) {
; CHECK-LABEL: @test_captured_before_load_same_bb(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
call void @escape_and_clobber(i32* %a)
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
}
define i32 @test_captured_sibling_path_to_load_other_blocks_1(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_sibling_path_to_load_other_blocks_1(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ELSE]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then:
call void @escape_writeonly(i32* %a)
br label %exit
else:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %in.lv.2, %else ]
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_only_captured_sibling_path_with_ret_to_load_other_blocks(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_only_captured_sibling_path_with_ret_to_load_other_blocks(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: ret i32 0
; CHECK: else:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then:
call void @escape_writeonly(i32* %a)
ret i32 0
else:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
br label %exit
exit:
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_captured_before_load_other_blocks_2(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_before_load_other_blocks_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ELSE]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then:
br label %exit
else:
call void @escape_and_clobber(i32* %a)
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %in.lv.2, %else ]
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_captured_before_load_other_blocks_4(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_before_load_other_blocks_4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, i32* %a
call void @escape_writeonly(i32* %a)
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %in.lv.2, %entry ]
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_captured_before_load_other_blocks_5(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_before_load_other_blocks_5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
entry:
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_captured_before_load_other_blocks_6(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_before_load_other_blocks_6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
entry:
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_writeonly(i32* %a)
call void @clobber()
ret i32 %in.lv.2
}
define i32 @test_not_captured_before_load_other_blocks_1(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_1(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
br i1 %c.1, label %then, label %else
then:
br label %exit
else:
br label %exit
exit:
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
}
define i32 @test_not_captured_before_load_other_blocks_2(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
br i1 %c.1, label %then, label %else
then:
call void @escape_and_clobber(i32* %a)
br label %exit
else:
call void @escape_and_clobber(i32* %a)
br label %exit
exit:
ret i32 %in.lv.2
}
define i32 @test_not_captured_before_load_other_blocks_3(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_3(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
br i1 %c.1, label %then, label %else
then:
call void @escape_and_clobber(i32* %a)
br label %exit
else:
br label %exit
exit:
ret i32 %in.lv.2
}
define i32 @test_not_captured_before_load_other_blocks_4(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_4(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ELSE]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then:
br label %exit
else:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %in.lv.2, %else ]
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_load_other_blocks_5(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[IN_LV_2]], [[THEN]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %exit
then:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ %in.lv.2, %then ], [ 0, %entry ]
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_load_other_blocks_6(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[IN_LV_2]], [[THEN]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %exit
then:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ %in.lv.2, %then ], [ 0, %entry ]
store i32 99, i32* %a, align 4
call void @escape_writeonly(i32* %a)
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_load_other_blocks_7(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_before_load_other_blocks_7(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ENTRY:%.*]] ]
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
entry:
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_writeonly(i32* %a)
br i1 %c.1, label %then, label %exit
then:
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %in.lv.2, %entry ]
store i32 99, i32* %a, align 4
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_before_load_same_bb_but_read(i32** %in.ptr) {
; CHECK-LABEL: @test_not_captured_before_load_same_bb_but_read(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[A]], align 4
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: [[RES:%.*]] = add i32 [[IN_LV_2]], [[LV]]
; CHECK-NEXT: ret i32 [[RES]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
%lv = load i32, i32* %a
store i32 99, i32* %a, align 4
call void @escape_and_clobber(i32* %a)
%res = add i32 %in.lv.2, %lv
ret i32 %res
}
define i32 @test_not_captured_before_load_may_alias_same_bb_but_read(i32** %in.ptr, i32* %b, i1 %c) {
; CHECK-LABEL: @test_not_captured_before_load_may_alias_same_bb_but_read(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: [[PTR:%.*]] = select i1 [[C:%.*]], i32* [[A]], i32* [[B:%.*]]
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: [[RES:%.*]] = add i32 [[IN_LV_2]], [[LV]]
; CHECK-NEXT: ret i32 [[RES]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
%ptr = select i1 %c, i32* %a, i32* %b
%lv = load i32, i32* %ptr
store i32 99, i32* %a, align 4
call void @escape_and_clobber(i32* %a)
%res = add i32 %in.lv.2, %lv
ret i32 %res
}
define i32 @test_captured_after_loop(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_after_loop(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br label %loop
loop:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
br i1 %c.1, label %loop, label %exit
exit:
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
}
define i32 @test_captured_in_loop(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_in_loop(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
; CHECK-NEXT: ret i32 [[IN_LV_2]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br label %loop
loop:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
call void @escape_writeonly(i32* %a)
store i32 99, i32* %a, align 4
br i1 %c.1, label %loop, label %exit
exit:
call void @escape_and_clobber(i32* %a)
ret i32 %in.lv.2
}
declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1 immarg)
@global = external global [10 x i16]*
define void @test_memset_not_captured_before_load() {
; CHECK-LABEL: @test_memset_not_captured_before_load(
; CHECK-NEXT: [[A:%.*]] = alloca [2 x i32], align 4
; CHECK-NEXT: [[LV_1:%.*]] = load [10 x i16]*, [10 x i16]** @global, align 8
; CHECK-NEXT: [[GEP_A_0:%.*]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A]], i32 0, i32 0
; CHECK-NEXT: store i32 1, i32* [[GEP_A_0]], align 4
; CHECK-NEXT: [[GEP_LV:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* [[LV_1]], i64 0, i32 1
; CHECK-NEXT: [[LV_2:%.*]] = load i16, i16* [[GEP_LV]], align 2
; CHECK-NEXT: [[EXT_LV_2:%.*]] = zext i16 [[LV_2]] to i32
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A]], i32 0, i32 1
; CHECK-NEXT: store i32 [[EXT_LV_2]], i32* [[GEP_A_1]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[GEP_A_0]])
; CHECK-NEXT: ret void
;
%a = alloca [2 x i32], align 4
%cast.a = bitcast [2 x i32]* %a to i8*
call void @llvm.memset.p0i8.i32(i8* %cast.a, i8 0, i32 8, i1 false)
%lv.1 = load [10 x i16]*, [10 x i16]** @global, align 8
%gep.a.0 = getelementptr inbounds [2 x i32], [2 x i32]* %a, i32 0, i32 0
store i32 1, i32* %gep.a.0, align 4
%gep.lv = getelementptr inbounds [10 x i16], [10 x i16]* %lv.1, i64 0, i32 1
%lv.2 = load i16, i16* %gep.lv, align 2
%ext.lv.2 = zext i16 %lv.2 to i32
%gep.a.1 = getelementptr inbounds [2 x i32], [2 x i32]* %a, i32 0, i32 1
store i32 %ext.lv.2, i32* %gep.a.1, align 4
call void @escape_and_clobber(i32* %gep.a.0)
ret void
}
define void @test_test_not_captured_before_load(i1 %c.1) {
; CHECK-LABEL: @test_test_not_captured_before_load(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[A:%.*]] = alloca [2 x i32], align 4
; CHECK-NEXT: [[CAST_A:%.*]] = bitcast [2 x i32]* [[A]] to i8*
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, i8* [[CAST_A]], i32 4
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 1 [[TMP0]], i8 0, i32 4, i1 false)
; CHECK-NEXT: [[LV_1:%.*]] = load [10 x i16]*, [10 x i16]** @global, align 8
; CHECK-NEXT: [[GEP_LV:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* [[LV_1]], i64 0, i32 1
; CHECK-NEXT: [[LV_2:%.*]] = load i16, i16* [[GEP_LV]], align 2
; CHECK-NEXT: [[GEP_A_0:%.*]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A]], i32 0, i32 0
; CHECK-NEXT: store i32 1, i32* [[GEP_A_0]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_and_clobber(i32* [[GEP_A_0]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[EXT_LV_2:%.*]] = zext i16 [[LV_2]] to i32
; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A]], i32 0, i32 1
; CHECK-NEXT: store i32 [[EXT_LV_2]], i32* [[GEP_A_1]], align 4
; CHECK-NEXT: call void @escape_and_clobber(i32* [[GEP_A_0]])
; CHECK-NEXT: ret void
;
bb:
%a = alloca [2 x i32], align 4
%cast.a = bitcast [2 x i32]* %a to i8*
call void @llvm.memset.p0i8.i32(i8* %cast.a, i8 0, i32 8, i1 false)
%lv.1 = load [10 x i16]*, [10 x i16]** @global, align 8
%gep.lv = getelementptr inbounds [10 x i16], [10 x i16]* %lv.1, i64 0, i32 1
%lv.2 = load i16, i16* %gep.lv, align 2
%gep.a.0 = getelementptr inbounds [2 x i32], [2 x i32]* %a, i32 0, i32 0
store i32 1, i32* %gep.a.0, align 4
br i1 %c.1, label %then, label %else
then:
call void @escape_and_clobber(i32* %gep.a.0)
br label %exit
else:
br label %exit
exit:
%ext.lv.2 = zext i16 %lv.2 to i32
%gep.a.1 = getelementptr inbounds [2 x i32], [2 x i32]* %a, i32 0, i32 1
store i32 %ext.lv.2, i32* %gep.a.1, align 4
call void @escape_and_clobber(i32* %gep.a.0)
ret void
}
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #0
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) #1
declare void @use.i64(i64)
define i64 @test_a_not_captured_at_all(i64** %ptr, i64** %ptr.2, i1 %c) {
; CHECK-LABEL: @test_a_not_captured_at_all(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i64, align 8
; CHECK-NEXT: [[B:%.*]] = alloca i64, align 8
; CHECK-NEXT: store i64* [[B]], i64** [[PTR:%.*]], align 8
; CHECK-NEXT: [[LV_1:%.*]] = load i64*, i64** [[PTR_2:%.*]], align 8
; CHECK-NEXT: br i1 [[C:%.*]], label [[EXIT:%.*]], label [[THEN:%.*]]
; CHECK: then:
; CHECK-NEXT: [[LV_2:%.*]] = load i64, i64* [[LV_1]], align 4
; CHECK-NEXT: call void @use.i64(i64 [[LV_2]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[A_CAST:%.*]] = bitcast i64* [[A]] to i8*
; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 8, i8* [[A_CAST]])
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[A_CAST]], i8 0, i64 8, i1 false)
; CHECK-NEXT: [[L:%.*]] = load i64, i64* [[A]], align 4
; CHECK-NEXT: ret i64 [[L]]
;
entry:
%a = alloca i64, align 8
%b = alloca i64, align 8
store i64* %b, i64** %ptr, align 8
%lv.1 = load i64*, i64** %ptr.2, align 8
br i1 %c, label %exit, label %then
then:
%lv.2 = load i64, i64* %lv.1
call void @use.i64(i64 %lv.2)
br label %exit
exit:
%a.cast = bitcast i64* %a to i8*
call void @llvm.lifetime.start.p0i8(i64 8, i8* %a.cast)
store i64 99, i64* %a
call void @clobber()
call void @llvm.memset.p0i8.i64(i8* %a.cast, i8 0, i64 8, i1 false)
%l = load i64, i64* %a
ret i64 %l
}
define i32 @test_not_captured_both_paths_1(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_both_paths_1(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ELSE]] ]
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then:
store i32 99, i32* %a, align 4
call void @escape_writeonly(i32* %a)
br label %exit
else:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ 0, %then ], [ %in.lv.2, %else ]
call void @clobber()
ret i32 %p
}
define i32 @test_not_captured_both_paths_2(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_not_captured_both_paths_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[IN_LV_2]], [[THEN]] ], [ 0, [[ELSE]] ]
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then:
%in.lv.1 = load i32* , i32** %in.ptr, align 2
%in.lv.2 = load i32 , i32* %in.lv.1, align 2
store i32 99, i32* %a, align 4
call void @escape_writeonly(i32* %a)
br label %exit
else:
store i32 99, i32* %a, align 4
call void @escape_writeonly(i32* %a)
br label %exit
exit:
%p = phi i32 [ %in.lv.2, %then ], [ 0, %else ]
call void @clobber()
ret i32 %p
}
define i32 @test_captured_before_store_both_paths_2(i32** %in.ptr, i1 %c.1) {
; CHECK-LABEL: @test_captured_before_store_both_paths_2(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 55, i32* [[A]], align 4
; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: else:
; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
; CHECK-NEXT: store i32 99, i32* [[A]], align 4
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[IN_LV_2]], [[THEN]] ], [ 0, [[ELSE]] ]
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: ret i32 [[P]]
;
%a = alloca i32, align 4
store i32 55, i32* %a
br i1 %c.1, label %then, label %else
then: