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[DCE] Add tests for non-willreturn function being removed (NFC)

This commit is contained in:
Nikita Popov 2021-02-18 21:25:14 +01:00
parent fbf8b957fd
commit 4045ad6b0c
2 changed files with 34 additions and 0 deletions
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17
llvm/test/Transforms/ADCE/willreturn.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -adce -S < %s | FileCheck %s
declare void @may_not_return(i32) nounwind readnone
declare void @will_return(i32) nounwind readnone willreturn
; FIXME: This is a miscompile.
define void @test(i32 %a) {
; CHECK-LABEL: @test(
; CHECK-NEXT: ret void
;
%b = add i32 %a, 1
call void @may_not_return(i32 %b)
%c = add i32 %b, 1
call void @will_return(i32 %c)
ret void
}

17
llvm/test/Transforms/BDCE/willreturn.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -bdce -S < %s | FileCheck %s
declare void @may_not_return(i32) nounwind readnone
declare void @will_return(i32) nounwind readnone willreturn
; FIXME: This is a miscompile.
define void @test(i32 %a) {
; CHECK-LABEL: @test(
; CHECK-NEXT: ret void
;
%b = add i32 %a, 1
call void @may_not_return(i32 %b)
%c = add i32 %b, 1
call void @will_return(i32 %c)
ret void
}