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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2010-12-04 20:32:23 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2010-12-04 20:32:23 +0000 |
| commit | 1292c226458b68a119d3a387a0527f453b2065c2 (patch) | |
| tree | 06a51ac1b82fa451fbf29a41395380f4510ce5f9 /test/CodeGen/X86/popcnt.ll | |
| parent | a6091be84c0ee838fb117b9cfb8eb9c156d44fad (diff) | |
| download | llvm-1292c226458b68a119d3a387a0527f453b2065c2.tar.gz llvm-1292c226458b68a119d3a387a0527f453b2065c2.tar.bz2 llvm-1292c226458b68a119d3a387a0527f453b2065c2.tar.xz | |
Add patterns for the x86 popcnt instruction.
- Also adds a new POPCNT subtarget feature that is currently enabled if the target
supports SSE4.2 (nehalem) or SSE4A (barcelona).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120917 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/popcnt.ll')
| -rw-r--r-- | test/CodeGen/X86/popcnt.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGen/X86/popcnt.ll b/test/CodeGen/X86/popcnt.ll new file mode 100644 index 0000000000..430214c73b --- /dev/null +++ b/test/CodeGen/X86/popcnt.ll @@ -0,0 +1,38 @@ +; RUN: llc -march=x86-64 -mattr=+popcnt < %s | FileCheck %s + +define i8 @cnt8(i8 %x) nounwind readnone { + %cnt = tail call i8 @llvm.ctpop.i8(i8 %x) + ret i8 %cnt +; CHECK: cnt8: +; CHECK: popcntw +; CHECK: ret +} + +define i16 @cnt16(i16 %x) nounwind readnone { + %cnt = tail call i16 @llvm.ctpop.i16(i16 %x) + ret i16 %cnt +; CHECK: cnt16: +; CHECK: popcntw +; CHECK: ret +} + +define i32 @cnt32(i32 %x) nounwind readnone { + %cnt = tail call i32 @llvm.ctpop.i32(i32 %x) + ret i32 %cnt +; CHECK: cnt32: +; CHECK: popcntl +; CHECK: ret +} + +define i64 @cnt64(i64 %x) nounwind readnone { + %cnt = tail call i64 @llvm.ctpop.i64(i64 %x) + ret i64 %cnt +; CHECK: cnt64: +; CHECK: popcntq +; CHECK: ret +} + +declare i8 @llvm.ctpop.i8(i8) nounwind readnone +declare i16 @llvm.ctpop.i16(i16) nounwind readnone +declare i32 @llvm.ctpop.i32(i32) nounwind readnone +declare i64 @llvm.ctpop.i64(i64) nounwind readnone |