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82fdd00490
Instead of using two feature bits, one to indicate the availability of the popcnt[dw] instructions, and another to indicate whether or not they're fast, use a single enum. This allows more consistent control via target attribute strings, and via Clang's command line. llvm-svn: 264690
57 lines
1.4 KiB
LLVM
57 lines
1.4 KiB
LLVM
; RUN: llc -march=ppc64 -mattr=+popcntd < %s | FileCheck %s
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; RUN: llc -march=ppc64 -mattr=+slow-popcntd < %s | FileCheck %s --check-prefix=SLOWPC
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; RUN: llc -march=ppc64 -mcpu=pwr7 < %s | FileCheck %s
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; RUN: llc -march=ppc64 -mcpu=a2q < %s | FileCheck %s --check-prefix=SLOWPC
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; RUN: llc -march=ppc64 -mcpu=a2q -mattr=+popcntd < %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-LABEL: @cnt8
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; CHECK: rlwinm
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; CHECK: popcntw
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; CHECK: blr
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; SLOWPC-LABEL: @cnt8
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; SLOWPC-NOT: popcnt
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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-LABEL: @cnt16
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; CHECK: rlwinm
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; CHECK: popcntw
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; CHECK: blr
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; SLOWPC-LABEL: @cnt16
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; SLOWPC-NOT: popcnt
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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-LABEL: @cnt32
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; CHECK: popcntw
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; CHECK: blr
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; SLOWPC-LABEL: @cnt32
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; SLOWPC-NOT: popcnt
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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-LABEL: @cnt64
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; CHECK: popcntd
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; CHECK: blr
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; SLOWPC-LABEL: @cnt64
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; SLOWPC-NOT: popcnt
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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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