1 ; RUN: llc -march=x86-64 -mattr=+popcnt < %s | FileCheck %s 2 3 define i8 @cnt8(i8 %x) nounwind readnone { 4 %cnt = tail call i8 @llvm.ctpop.i8(i8 %x) 5 ret i8 %cnt 6 ; CHECK-LABEL: cnt8: 7 ; CHECK: popcntw 8 ; CHECK: ret 9 } 10 11 define i16 @cnt16(i16 %x) nounwind readnone { 12 %cnt = tail call i16 @llvm.ctpop.i16(i16 %x) 13 ret i16 %cnt 14 ; CHECK-LABEL: cnt16: 15 ; CHECK: popcntw 16 ; CHECK: ret 17 } 18 19 define i32 @cnt32(i32 %x) nounwind readnone { 20 %cnt = tail call i32 @llvm.ctpop.i32(i32 %x) 21 ret i32 %cnt 22 ; CHECK-LABEL: cnt32: 23 ; CHECK: popcntl 24 ; CHECK: ret 25 } 26 27 define i64 @cnt64(i64 %x) nounwind readnone { 28 %cnt = tail call i64 @llvm.ctpop.i64(i64 %x) 29 ret i64 %cnt 30 ; CHECK-LABEL: cnt64: 31 ; CHECK: popcntq 32 ; CHECK: ret 33 } 34 35 declare i8 @llvm.ctpop.i8(i8) nounwind readnone 36 declare i16 @llvm.ctpop.i16(i16) nounwind readnone 37 declare i32 @llvm.ctpop.i32(i32) nounwind readnone 38 declare i64 @llvm.ctpop.i64(i64) nounwind readnone 39
