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[NFC][SimplifyCFG] Add basic test for debuginfo preservation of `ret` tail merging

This commit is contained in:
Roman Lebedev 2021-06-21 23:56:25 +03:00
parent 3e98b88797
commit 4cf74469a0
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GPG Key ID: 083C3EBB4A1689E0
1 changed files with 13 additions and 1 deletions
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14
llvm/test/Transforms/SimplifyCFG/return-merge.ll
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@ -1,5 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck --check-prefixes=CHECK %s
; RUN: opt < %s -debugify -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck --check-prefixes=DBGINFO %s
define i32 @test1(i1 %C) {
; CHECK-LABEL: @test1(
@ -7,6 +8,12 @@ define i32 @test1(i1 %C) {
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[C:%.*]], i32 1, i32 0
; CHECK-NEXT: ret i32 [[SPEC_SELECT]]
;
; DBGINFO-LABEL: @test1(
; DBGINFO-NEXT: entry:
; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 0, metadata [[META9:![0-9]+]], metadata !DIExpression()), !dbg [[DBG11:![0-9]+]]
; DBGINFO-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[C:%.*]], i32 1, i32 0, !dbg [[DBG11]]
; DBGINFO-NEXT: ret i32 [[SPEC_SELECT]], !dbg [[DBG12:![0-9]+]]
;
entry:
br i1 %C, label %T, label %F
T: ; preds = %entry
@ -19,6 +26,11 @@ define void @test2(i1 %C) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: T:
; CHECK-NEXT: ret void
;
; DBGINFO-LABEL: @test2(
; DBGINFO-NEXT: T:
; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 0, metadata [[META15:![0-9]+]], metadata !DIExpression()), !dbg [[DBG16:![0-9]+]]
; DBGINFO-NEXT: ret void, !dbg [[DBG17:![0-9]+]]
;
br i1 %C, label %T, label %F
T: ; preds = %0