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llvm-project/llvm/test/CodeGen/PowerPC/popcnt.ll

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Add the PPC64 popcntd instruction PPC ISA 2.06 (P7, A2, etc.) has a popcntd instruction. Add this instruction and tell TTI about it so that popcount-loop recognition will know about it. llvm-svn: 178233
2013-03-28 21:29:47 +08:00
; 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
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 23:58:15 +08:00
; CHECK: rlwinm
; CHECK: popcntw
Add the PPC64 popcntd instruction PPC ISA 2.06 (P7, A2, etc.) has a popcntd instruction. Add this instruction and tell TTI about it so that popcount-loop recognition will know about it. llvm-svn: 178233
2013-03-28 21:29:47 +08:00
; CHECK: blr
}
define i16 @cnt16(i16 %x) nounwind readnone {
%cnt = tail call i16 @llvm.ctpop.i16(i16 %x)
ret i16 %cnt
; CHECK: @cnt16
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 23:58:15 +08:00
; CHECK: rlwinm
; CHECK: popcntw
Add the PPC64 popcntd instruction PPC ISA 2.06 (P7, A2, etc.) has a popcntd instruction. Add this instruction and tell TTI about it so that popcount-loop recognition will know about it. llvm-svn: 178233
2013-03-28 21:29:47 +08:00
; CHECK: blr
}
define i32 @cnt32(i32 %x) nounwind readnone {
%cnt = tail call i32 @llvm.ctpop.i32(i32 %x)
ret i32 %cnt
; CHECK: @cnt32
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 23:58:15 +08:00
; CHECK: popcntw
Add the PPC64 popcntd instruction PPC ISA 2.06 (P7, A2, etc.) has a popcntd instruction. Add this instruction and tell TTI about it so that popcount-loop recognition will know about it. llvm-svn: 178233
2013-03-28 21:29:47 +08:00
; 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