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[Test] Add a JumpThreading test exposing a bug in BasicAA.

This commit is contained in:
Daniil Suchkov 2021-06-04 22:55:35 +00:00
parent 9145a3d4ab
commit e72f16b7e6
1 changed files with 45 additions and 0 deletions
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45
llvm/test/Transforms/JumpThreading/aa-crash-phi-no-args.ll Normal file
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; XFAIL: *
; REQUIRES: asserts
; RUN: opt -jump-threading -aa-pipeline basic-aa -S -disable-output %s
; RUN: opt -passes=jump-threading -aa-pipeline basic-aa -S -disable-output %s
define void @foo(i8** %arg1, i32* %arg2) {
bb:
br label %bb1
bb1:
%tmp = phi i1 [ 0, %bb24 ], [ 1, %bb ]
br i1 %tmp, label %bb9, label %bb24
bb9:
br i1 %tmp, label %bb8, label %bb20
bb8:
ret void
bb13:
br label %bb14
bb14:
%tmp15 = phi i32* [ %tmp21, %bb20 ], [ %arg2, %bb13 ]
%tmp16 = phi i8** [ %tmp22, %bb20 ], [ %arg1, %bb13 ]
store atomic i32 0, i32* %tmp15 unordered, align 4
%tmp17 = load atomic i8*, i8** %tmp16 unordered, align 8
%tmp18 = icmp eq i8* %tmp17, null
br i1 %tmp18, label %bb25, label %bb19
bb19:
ret void
bb20:
%tmp21 = phi i32* [ %arg2, %bb9 ]
%tmp22 = phi i8** [ %arg1, %bb9 ]
br label %bb14
bb24:
br label %bb1
bb25:
ret void
}