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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2012-03-31 18:14:00 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2012-03-31 18:14:00 +0000 |
| commit | 95d594cac3737ae1594a391276942a443cac426b (patch) | |
| tree | 169dda5061241d6c695ce797a8d8f84887d5b43f /test/CodeGen/X86/pr12360.ll | |
| parent | 5b00ceaeeabff8c25abb09926343c3fcb06053d8 (diff) | |
| download | external_llvm-95d594cac3737ae1594a391276942a443cac426b.zip external_llvm-95d594cac3737ae1594a391276942a443cac426b.tar.gz external_llvm-95d594cac3737ae1594a391276942a443cac426b.tar.bz2 | |
Teach CodeGen's version of computeMaskedBits to understand the range metadata.
This is the CodeGen equivalent of r153747. I tested that there is not noticeable
performance difference with any combination of -O0/-O2 /-g when compiling
gcc as a single compilation unit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153817 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/pr12360.ll')
| -rw-r--r-- | test/CodeGen/X86/pr12360.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/X86/pr12360.ll b/test/CodeGen/X86/pr12360.ll new file mode 100644 index 0000000..c0af432 --- /dev/null +++ b/test/CodeGen/X86/pr12360.ll @@ -0,0 +1,14 @@ +; RUN: llc < %s -march=x86-64 | FileCheck %s + +define zeroext i1 @f1(i8* %x) { +entry: + %0 = load i8* %x, align 1, !range !0 + %tobool = trunc i8 %0 to i1 + ret i1 %tobool +} + +; CHECK: f1: +; CHECK: movb (%rdi), %al +; CHECK-NEXT: ret + +!0 = metadata !{i8 0, i8 2} |