forked from OSchip/llvm-project
[DSE] Add capture-before test cases with loads.
Add a set of test cases where redundant stores may be removable, depending on whether a local allocation gets captured before performing a load.
This commit is contained in:
Florian Hahn
parent
61cc873a8e
commit
05c120823b
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@ -0,0 +1,799 @@
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes='dse' -S %s | FileCheck %s
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declare void @escape_and_clobber(i32*)
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declare void @escape_writeonly(i32*) writeonly
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declare void @clobber()
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define i32 @test_not_captured_before_load_same_bb(i32** %in.ptr) {
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; CHECK-LABEL: @test_not_captured_before_load_same_bb(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @escape_and_clobber(i32* %a)
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ret i32 %in.lv.2
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}
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define i32 @test_not_captured_before_load_same_bb_escape_unreachable_block(i32** %in.ptr) {
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; CHECK-LABEL: @test_not_captured_before_load_same_bb_escape_unreachable_block(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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; CHECK: unreach:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 0
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @escape_and_clobber(i32* %a)
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ret i32 %in.lv.2
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unreach:
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call void @escape_and_clobber(i32* %a)
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ret i32 0
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}
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define i32 @test_captured_and_clobbered_after_load_same_bb_2(i32** %in.ptr) {
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; CHECK-LABEL: @test_captured_and_clobbered_after_load_same_bb_2(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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call void @escape_and_clobber(i32* %a)
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %in.lv.2
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}
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define i32 @test_captured_after_load_same_bb_2_clobbered_later(i32** %in.ptr) {
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; CHECK-LABEL: @test_captured_after_load_same_bb_2_clobbered_later(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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call void @escape_writeonly(i32* %a)
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %in.lv.2
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}
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define i32 @test_captured_and_clobbered_before_load_same_bb_1(i32** %in.ptr) {
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; CHECK-LABEL: @test_captured_and_clobbered_before_load_same_bb_1(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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call void @escape_and_clobber(i32* %a)
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %in.lv.2
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}
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define i32 @test_captured_before_load_same_bb_1_clobbered_later(i32** %in.ptr) {
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; CHECK-LABEL: @test_captured_before_load_same_bb_1_clobbered_later(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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call void @escape_writeonly(i32* %a)
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %in.lv.2
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}
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define i32 @test_captured_before_load_same_bb_2(i32** %in.ptr) {
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; CHECK-LABEL: @test_captured_before_load_same_bb_2(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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call void @escape_and_clobber(i32* %a)
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %in.lv.2
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}
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define i32 @test_not_captured_before_load_same_bb_clobber(i32** %in.ptr) {
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; CHECK-LABEL: @test_not_captured_before_load_same_bb_clobber(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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call void @clobber()
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @escape_and_clobber(i32* %a)
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ret i32 %in.lv.2
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}
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define i32 @test_captured_before_load_same_bb(i32** %in.ptr) {
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; CHECK-LABEL: @test_captured_before_load_same_bb(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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call void @escape_and_clobber(i32* %a)
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @escape_and_clobber(i32* %a)
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ret i32 %in.lv.2
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}
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define i32 @test_captured_sibling_path_to_load_other_blocks_1(i32** %in.ptr, i1 %c.1) {
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; CHECK-LABEL: @test_captured_sibling_path_to_load_other_blocks_1(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ELSE]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %else
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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else:
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %in.lv.2, %else ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_captured_before_load_other_blocks_2(i32** %in.ptr, i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_load_other_blocks_2(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: else:
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; CHECK-NEXT: call void @escape_and_clobber(i32* [[A]])
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ELSE]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %else
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then:
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br label %exit
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else:
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call void @escape_and_clobber(i32* %a)
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %in.lv.2, %else ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_captured_before_load_other_blocks_4(i32** %in.ptr, i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_load_other_blocks_4(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[P:%.*]] = phi i32 [ 0, [[THEN]] ], [ [[IN_LV_2]], [[ENTRY:%.*]] ]
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[P]]
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;
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entry:
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%a = alloca i32, align 4
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store i32 55, i32* %a
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call void @escape_writeonly(i32* %a)
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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br i1 %c.1, label %then, label %exit
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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exit:
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%p = phi i32 [ 0, %then ], [ %in.lv.2, %entry ]
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %p
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}
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define i32 @test_captured_before_load_other_blocks_5(i32** %in.ptr, i1 %c.1) {
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; CHECK-LABEL: @test_captured_before_load_other_blocks_5(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: store i32 55, i32* [[A]], align 4
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; CHECK-NEXT: br i1 [[C_1:%.*]], label [[THEN:%.*]], label [[EXIT:%.*]]
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; CHECK: then:
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; CHECK-NEXT: call void @escape_writeonly(i32* [[A]])
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[IN_LV_1:%.*]] = load i32*, i32** [[IN_PTR:%.*]], align 2
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; CHECK-NEXT: [[IN_LV_2:%.*]] = load i32, i32* [[IN_LV_1]], align 2
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; CHECK-NEXT: store i32 99, i32* [[A]], align 4
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; CHECK-NEXT: call void @clobber()
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; CHECK-NEXT: ret i32 [[IN_LV_2]]
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;
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entry:
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%a = alloca i32, align 4
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store i32 55, i32* %a
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br i1 %c.1, label %then, label %exit
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then:
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call void @escape_writeonly(i32* %a)
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br label %exit
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exit:
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%in.lv.1 = load i32* , i32** %in.ptr, align 2
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%in.lv.2 = load i32 , i32* %in.lv.1, align 2
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store i32 99, i32* %a, align 4
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call void @clobber()
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ret i32 %in.lv.2
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}
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||||
|
||||
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: 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: 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: 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: 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: 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: 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: 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: [[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: 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 @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: 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_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_captured_after_loop(i32** %in.ptr, i1 %c.1) {
|
||||
; CHECK-LABEL: @test_captured_after_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: 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: [[CAST_A:%.*]] = bitcast [2 x i32]* [[A]] to i8*
|
||||
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, i8* [[CAST_A]], i32 4
|
||||
; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* align 1 [[TMP1]], i8 0, i32 4, i1 false)
|
||||
; 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: call void @llvm.memset.p0i8.i32(i8* [[CAST_A]], i8 0, i32 8, 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
|
||||
}
|
||||
Loading…
Reference in New Issue