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| author | Eli Friedman <eli.friedman@gmail.com> | 2011-12-09 01:16:26 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-12-09 01:16:26 +0000 |
| commit | 053a724483dcb9707e06462018c352b9a4bda2af (patch) | |
| tree | df62815263f96a4452c8761978538918a19ea7db /llvm/test/CodeGen/PowerPC | |
| parent | 329b351807a8964e03f2acb97265ca7d74abaeeb (diff) | |
| download | bcm5719-llvm-053a724483dcb9707e06462018c352b9a4bda2af.tar.gz bcm5719-llvm-053a724483dcb9707e06462018c352b9a4bda2af.zip | |
Fix a couple of logic bugs in TargetLowering::SimplifyDemandedBits. PR11514.
llvm-svn: 146219
Diffstat (limited to 'llvm/test/CodeGen/PowerPC')
| -rw-r--r-- | llvm/test/CodeGen/PowerPC/2011-12-08-DemandedBitsMiscompile.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/PowerPC/2011-12-08-DemandedBitsMiscompile.ll b/llvm/test/CodeGen/PowerPC/2011-12-08-DemandedBitsMiscompile.ll new file mode 100644 index 00000000000..a18829e1bce --- /dev/null +++ b/llvm/test/CodeGen/PowerPC/2011-12-08-DemandedBitsMiscompile.ll @@ -0,0 +1,16 @@ +; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=g4 | FileCheck %s + +define void @test(i32* nocapture %x, i64* %xx, i32* %yp) nounwind uwtable ssp { +entry: + %yy = load i32* %yp + %y = add i32 %yy, 1 + %z = zext i32 %y to i64 + %z2 = shl i64 %z, 32 + store i64 %z2, i64* %xx, align 4 + ret void + +; CHECK: test: +; CHECK: sldi {{.*}}, {{.*}}, 32 +; Note: it's okay if someday CodeGen gets smart enough to optimize out +; the shift. +} |
