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1292c22645
- 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
39 lines
882 B
LLVM
39 lines
882 B
LLVM
; RUN: llc -march=x86-64 -mattr=+popcnt < %s | FileCheck %s
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define i8 @cnt8(i8 %x) nounwind readnone {
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%cnt = tail call i8 @llvm.ctpop.i8(i8 %x)
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ret i8 %cnt
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; CHECK: cnt8:
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; CHECK: popcntw
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; CHECK: ret
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}
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define i16 @cnt16(i16 %x) nounwind readnone {
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%cnt = tail call i16 @llvm.ctpop.i16(i16 %x)
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ret i16 %cnt
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; CHECK: cnt16:
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; CHECK: popcntw
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; CHECK: ret
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}
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define i32 @cnt32(i32 %x) nounwind readnone {
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%cnt = tail call i32 @llvm.ctpop.i32(i32 %x)
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ret i32 %cnt
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; CHECK: cnt32:
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; CHECK: popcntl
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; CHECK: ret
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}
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define i64 @cnt64(i64 %x) nounwind readnone {
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%cnt = tail call i64 @llvm.ctpop.i64(i64 %x)
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ret i64 %cnt
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; CHECK: cnt64:
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; CHECK: popcntq
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; CHECK: ret
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}
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declare i8 @llvm.ctpop.i8(i8) nounwind readnone
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declare i16 @llvm.ctpop.i16(i16) nounwind readnone
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declare i32 @llvm.ctpop.i32(i32) nounwind readnone
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declare i64 @llvm.ctpop.i64(i64) nounwind readnone
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