mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-08 18:30:04 +00:00
1fce88313e
The popcntw instruction is available whenever the popcntd instruction is available, and performs a separate popcnt on the lower and upper 32-bits. Ignoring the high-order count, this can be used for the 32-bit input case (saving on the explicit zero extension otherwise required to use popcntd). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178470 91177308-0d34-0410-b5e6-96231b3b80d8
41 lines
914 B
LLVM
41 lines
914 B
LLVM
; RUN: llc -march=ppc64 -mattr=+popcntd < %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: rlwinm
|
|
; CHECK: popcntw
|
|
; CHECK: blr
|
|
}
|
|
|
|
define i16 @cnt16(i16 %x) nounwind readnone {
|
|
%cnt = tail call i16 @llvm.ctpop.i16(i16 %x)
|
|
ret i16 %cnt
|
|
; CHECK: @cnt16
|
|
; CHECK: rlwinm
|
|
; CHECK: popcntw
|
|
; CHECK: blr
|
|
}
|
|
|
|
define i32 @cnt32(i32 %x) nounwind readnone {
|
|
%cnt = tail call i32 @llvm.ctpop.i32(i32 %x)
|
|
ret i32 %cnt
|
|
; CHECK: @cnt32
|
|
; CHECK: popcntw
|
|
; CHECK: blr
|
|
}
|
|
|
|
define i64 @cnt64(i64 %x) nounwind readnone {
|
|
%cnt = tail call i64 @llvm.ctpop.i64(i64 %x)
|
|
ret i64 %cnt
|
|
; CHECK: @cnt64
|
|
; CHECK: popcntd
|
|
; CHECK: blr
|
|
}
|
|
|
|
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
|