AcoSail/llvm-project
8
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[Test] Add hanging test for D146276

Browse Source 
The patch was reverted because of hang, adding the test so that this doesn't
happen again.
This commit is contained in:
Max Kazantsev 2023-03-22 14:25:34 +07:00
parent 1fe6a8a584
commit e603285316
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
llvm/test/Transforms/GuardWidening/hang.ll Normal file
View File

@ -0,0 +1,32 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -S -passes=guard-widening < %s | FileCheck %s
; Make sure we don't hang here.
define i64 @test() {
; CHECK-LABEL: define i64 @test() {
; CHECK-NEXT: bb:
; CHECK-NEXT: [[WIDE_CHK:%.*]] = and i1 poison, poison
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WIDE_CHK]]) [ "deopt"() ]
; CHECK-NEXT: br label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br i1 poison, label [[BB3:%.*]], label [[BB2]]
; CHECK: bb3:
; CHECK-NEXT: [[CALL:%.*]] = call i64 (...) @llvm.experimental.deoptimize.i64() [ "deopt"() ]
; CHECK-NEXT: ret i64 [[CALL]]
;
bb:
call void (i1, ...) @llvm.experimental.guard(i1 poison) [ "deopt"() ]
br label %bb2
bb2: ; preds = %bb2, %bb
br i1 poison, label %bb3, label %bb2
bb3: ; preds = %bb2
call void (i1, ...) @llvm.experimental.guard(i1 poison) [ "deopt"() ]
%call = call i64 (...) @llvm.experimental.deoptimize.i64() [ "deopt"() ]
ret i64 %call
}
declare i64 @llvm.experimental.deoptimize.i64(...)
declare void @llvm.experimental.guard(i1, ...)