1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-10-31 07:52:55 +01:00
llvm-mirror/test/CodeGen/PowerPC/popcnt.ll
Hal Finkel 9eed3ac928 Add the PPC popcntw instruction
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).

llvm-svn: 178470
2013-04-01 15:58:15 +00:00

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