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| author | Eli Friedman <eli.friedman@gmail.com> | 2012-08-08 02:17:32 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2012-08-08 02:17:32 +0000 |
| commit | 1b88fc012240d10af5a80571aa8def36796f7b18 (patch) | |
| tree | 1f980602b6d7c657fa53c58d11443f162a63d894 /test/Transforms/DeadStoreElimination | |
| parent | 913ff09a9acf563ae9719ff223bc117dd66ad6b0 (diff) | |
| download | llvm-1b88fc012240d10af5a80571aa8def36796f7b18.tar.gz llvm-1b88fc012240d10af5a80571aa8def36796f7b18.tar.bz2 llvm-1b88fc012240d10af5a80571aa8def36796f7b18.tar.xz | |
isAllocLikeFn is allowed to return true for functions which read memory; make
sure we account for that correctly in DeadStoreElimination. Fixes a regression
from r158919. PR13547.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161468 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/DeadStoreElimination')
| -rw-r--r-- | test/Transforms/DeadStoreElimination/simple.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/DeadStoreElimination/simple.ll b/test/Transforms/DeadStoreElimination/simple.ll index a38620695e..ed53ab7e60 100644 --- a/test/Transforms/DeadStoreElimination/simple.ll +++ b/test/Transforms/DeadStoreElimination/simple.ll @@ -276,3 +276,18 @@ define void @test22(i1 %i, i32 %k, i32 %m) nounwind { ; CHECK-NEXT: ret void ret void } + +; PR13547 +; CHECK: @test23 +; CHECK: store i8 97 +; CHECK: store i8 0 +declare noalias i8* @strdup(i8* nocapture) nounwind +define noalias i8* @test23() nounwind uwtable ssp { + %x = alloca [2 x i8], align 1 + %arrayidx = getelementptr inbounds [2 x i8]* %x, i64 0, i64 0 + store i8 97, i8* %arrayidx, align 1 + %arrayidx1 = getelementptr inbounds [2 x i8]* %x, i64 0, i64 1 + store i8 0, i8* %arrayidx1, align 1 + %call = call i8* @strdup(i8* %arrayidx) nounwind + ret i8* %call +} |