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author | Nikita Popov <npopov@redhat.com> | 2022-01-11 11:49:08 +0100 |
---|---|---|
committer | Nikita Popov <npopov@redhat.com> | 2022-01-11 11:49:52 +0100 |
commit | fe2c4af905074c7a7745aad3177ad32ac2bd30cf (patch) | |
tree | 116a96c0d829601c28184c4d7d4ea14e4d4dc573 | |
parent | 83797c03d2ee0786259d261e6716836e60520a05 (diff) | |
download | llvm-fe2c4af905074c7a7745aad3177ad32ac2bd30cf.tar.gz |
[DSE] Make test more robust (NFC)
If the allocation is not captured, then all the stores before the
ret are dead anyway.
-rw-r--r-- | llvm/test/Transforms/DeadStoreElimination/memset-unknown-sizes.ll | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/llvm/test/Transforms/DeadStoreElimination/memset-unknown-sizes.ll b/llvm/test/Transforms/DeadStoreElimination/memset-unknown-sizes.ll index d7fc00e3940a..65bfe3879763 100644 --- a/llvm/test/Transforms/DeadStoreElimination/memset-unknown-sizes.ll +++ b/llvm/test/Transforms/DeadStoreElimination/memset-unknown-sizes.ll @@ -6,37 +6,37 @@ declare i8* @_Znwm() local_unnamed_addr #0 ; Function Attrs: argmemonly nounwind willreturn writeonly declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) #1 -define void @test1(i1 %c, i64 %N) { +define i8* @test1(i1 %c, i64 %N) { ; CHECK-LABEL: @test1( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[COND_TRUE_I_I_I:%.*]], label [[COND_END_I_I_I:%.*]] ; CHECK: cond.true.i.i.i: -; CHECK-NEXT: ret void +; CHECK-NEXT: ret i8* null ; CHECK: cond.end.i.i.i: ; CHECK-NEXT: [[ALLOC:%.*]] = tail call noalias nonnull i8* @_Znam() #[[ATTR2:[0-9]+]] ; CHECK-NEXT: [[ALLOC_BC:%.*]] = bitcast i8* [[ALLOC]] to i64* ; CHECK-NEXT: tail call void @llvm.memset.p0i8.i64(i8* nonnull align 8 [[ALLOC]], i8 0, i64 [[N:%.*]], i1 false) #[[ATTR3:[0-9]+]] ; CHECK-NEXT: store i64 0, i64* [[ALLOC_BC]], align 8 -; CHECK-NEXT: ret void +; CHECK-NEXT: ret i8* [[ALLOC]] ; entry: br i1 %c, label %cond.true.i.i.i, label %cond.end.i.i.i cond.true.i.i.i: ; preds = %entry - ret void + ret i8* null cond.end.i.i.i: ; preds = %entry %alloc = tail call noalias nonnull i8* @_Znam() #2 %alloc.bc = bitcast i8* %alloc to i64* tail call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %alloc, i8 0, i64 %N, i1 false) #3 store i64 0, i64* %alloc.bc, align 8 - ret void + ret i8* %alloc } declare i8* @_Znam() -define void @test2(i1 %c, i64 %N) { +define i8* @test2(i1 %c, i64 %N) { ; CHECK-LABEL: @test2( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[CLEANUP_CONT104:%.*]], label [[IF_THEN:%.*]] @@ -46,9 +46,9 @@ define void @test2(i1 %c, i64 %N) { ; CHECK-NEXT: [[ALLOC_BC:%.*]] = bitcast i8* [[ALLOC]] to i64* ; CHECK-NEXT: store i64 0, i64* [[ALLOC_BC]], align 8 ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 8 [[ALLOC]], i8 0, i64 [[MUL]], i1 false) #[[ATTR3]] -; CHECK-NEXT: ret void +; CHECK-NEXT: ret i8* [[ALLOC]] ; CHECK: cleanup.cont104: -; CHECK-NEXT: ret void +; CHECK-NEXT: ret i8* null ; entry: br i1 %c, label %cleanup.cont104, label %if.then @@ -59,10 +59,10 @@ if.then: ; preds = %entry %alloc.bc = bitcast i8* %alloc to i64* store i64 0, i64* %alloc.bc, align 8 call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %alloc, i8 0, i64 %mul, i1 false) #3 - ret void + ret i8* %alloc cleanup.cont104: ; preds = %entry - ret void + ret i8* null } attributes #0 = { "use-soft-float"="false" } |