popcnt.ll
1.74 KB
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; RUN: llc -verify-machineinstrs -mtriple=ppc64-- -mattr=+popcntd < %s | FileCheck %s
; RUN: llc -verify-machineinstrs -mtriple=ppc64-- -mattr=+slow-popcntd < %s | FileCheck %s --check-prefix=SLOWPC
; RUN: llc -verify-machineinstrs -mtriple=ppc64-- -mcpu=pwr7 < %s | FileCheck %s
define i64 @_cntb64(i64 %x) nounwind readnone {
%cnt = tail call i64 @llvm.ppc.popcntb(i64 %x)
ret i64 %cnt
; CHECK-LABEL: @_cntb64
; CHECK: popcntb
; CHECK: blr
}
define i32 @_cntb32(i32 %x) nounwind readnone {
%y = zext i32 %x to i64
%cnt = tail call i64 @llvm.ppc.popcntb(i64 %y)
%res = trunc i64 %cnt to i32
ret i32 %res
; CHECK-LABEL: @_cntb32
; CHECK: popcntb
; CHECK: blr
}
define i8 @cnt8(i8 %x) nounwind readnone {
%cnt = tail call i8 @llvm.ctpop.i8(i8 %x)
ret i8 %cnt
; CHECK-LABEL: @cnt8
; CHECK: clrldi
; CHECK: popcntd
; CHECK: blr
; SLOWPC-LABEL: @cnt8
; SLOWPC-NOT: popcnt
}
define i16 @cnt16(i16 %x) nounwind readnone {
%cnt = tail call i16 @llvm.ctpop.i16(i16 %x)
ret i16 %cnt
; CHECK-LABEL: @cnt16
; CHECK: clrldi
; CHECK: popcntd
; CHECK: blr
; SLOWPC-LABEL: @cnt16
; SLOWPC-NOT: popcnt
}
define i32 @cnt32(i32 %x) nounwind readnone {
%cnt = tail call i32 @llvm.ctpop.i32(i32 %x)
ret i32 %cnt
; CHECK-LABEL: @cnt32
; CHECK: popcntw
; CHECK: blr
; SLOWPC-LABEL: @cnt32
; SLOWPC-NOT: popcnt
}
define i64 @cnt64(i64 %x) nounwind readnone {
%cnt = tail call i64 @llvm.ctpop.i64(i64 %x)
ret i64 %cnt
; CHECK-LABEL: @cnt64
; CHECK: popcntd
; CHECK: blr
; SLOWPC-LABEL: @cnt64
; SLOWPC-NOT: popcnt
}
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
declare i64 @llvm.ppc.popcntb(i64) nounwind readnone