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| author | Pete Cooper <peter_cooper@apple.com> | 2011-12-03 00:04:30 +0000 |
|---|---|---|
| committer | Pete Cooper <peter_cooper@apple.com> | 2011-12-03 00:04:30 +0000 |
| commit | de2e27cc52a9e47e0261dda6dfb54a32eefa90a0 (patch) | |
| tree | 9a32e49f6c5b1e49cf96db5ad96825c42c661cfa /test | |
| parent | 24fbf2bf161b20b13d0a218345bdcd092bdd56f8 (diff) | |
| download | llvm-de2e27cc52a9e47e0261dda6dfb54a32eefa90a0.tar.gz llvm-de2e27cc52a9e47e0261dda6dfb54a32eefa90a0.tar.bz2 llvm-de2e27cc52a9e47e0261dda6dfb54a32eefa90a0.tar.xz | |
Fixed deadstoreelimination bug where negative indices were incorrectly causing the optimisation to occur
Turns out long long + unsigned long long is unsigned. Doh!
Fixes http://llvm.org/bugs/show_bug.cgi?id=11455
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145731 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/DeadStoreElimination/OverwriteStoreEnd.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/Transforms/DeadStoreElimination/OverwriteStoreEnd.ll b/test/Transforms/DeadStoreElimination/OverwriteStoreEnd.ll index 828ccc57a4..ed53eb524c 100644 --- a/test/Transforms/DeadStoreElimination/OverwriteStoreEnd.ll +++ b/test/Transforms/DeadStoreElimination/OverwriteStoreEnd.ll @@ -76,3 +76,20 @@ entry: declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind + +%struct.trapframe = type { i64, i64, i64 } + +; bugzilla 11455 - make sure negative GEP's don't break this optimisation +; CHECK: @cpu_lwp_fork +define void @cpu_lwp_fork(%struct.trapframe* %md_regs, i64 %pcb_rsp0) nounwind uwtable noinline ssp { +entry: + %0 = inttoptr i64 %pcb_rsp0 to %struct.trapframe* + %add.ptr = getelementptr inbounds %struct.trapframe* %0, i64 -1 + %1 = bitcast %struct.trapframe* %add.ptr to i8* + %2 = bitcast %struct.trapframe* %md_regs to i8* +; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 24, i32 1, i1 false) + call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 24, i32 1, i1 false) + %tf_trapno = getelementptr inbounds %struct.trapframe* %0, i64 -1, i32 1 + store i64 3, i64* %tf_trapno, align 8 + ret void +} |