1 ; RUN: llc -march=x86-64 < %s | FileCheck %s 2 3 declare i64 @llvm.ctpop.i64(i64) nounwind readnone 4 5 define i32 @test1(i64 %x) nounwind readnone { 6 %count = tail call i64 @llvm.ctpop.i64(i64 %x) 7 %cast = trunc i64 %count to i32 8 %cmp = icmp ugt i32 %cast, 1 9 %conv = zext i1 %cmp to i32 10 ret i32 %conv 11 ; CHECK: test1: 12 ; CHECK: leaq -1([[A0:%rdi|%rcx]]) 13 ; CHECK-NEXT: testq 14 ; CHECK-NEXT: setne 15 ; CHECK: ret 16 } 17 18 19 define i32 @test2(i64 %x) nounwind readnone { 20 %count = tail call i64 @llvm.ctpop.i64(i64 %x) 21 %cmp = icmp ult i64 %count, 2 22 %conv = zext i1 %cmp to i32 23 ret i32 %conv 24 ; CHECK: test2: 25 ; CHECK: leaq -1([[A0]]) 26 ; CHECK-NEXT: testq 27 ; CHECK-NEXT: sete 28 ; CHECK: ret 29 } 30 31 define i32 @test3(i64 %x) nounwind readnone { 32 %count = tail call i64 @llvm.ctpop.i64(i64 %x) 33 %cast = trunc i64 %count to i6 ; Too small for 0-64 34 %cmp = icmp ult i6 %cast, 2 35 %conv = zext i1 %cmp to i32 36 ret i32 %conv 37 ; CHECK: test3: 38 ; CHECK: cmpb $2 39 ; CHECK: ret 40 } 41
