forked from OSchip/llvm-project
51 lines
1.4 KiB
LLVM
51 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=corei7 | FileCheck %s
|
|
|
|
declare i64 @llvm.ctpop.i64(i64) nounwind readnone
|
|
|
|
define i32 @test1(i64 %x) nounwind readnone {
|
|
; CHECK-LABEL: test1:
|
|
; CHECK: # BB#0:
|
|
; CHECK-NEXT: leaq -1(%rdi), %rcx
|
|
; CHECK-NEXT: xorl %eax, %eax
|
|
; CHECK-NEXT: testq %rcx, %rdi
|
|
; CHECK-NEXT: setne %al
|
|
; CHECK-NEXT: retq
|
|
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
|
|
%cast = trunc i64 %count to i32
|
|
%cmp = icmp ugt i32 %cast, 1
|
|
%conv = zext i1 %cmp to i32
|
|
ret i32 %conv
|
|
}
|
|
|
|
|
|
define i32 @test2(i64 %x) nounwind readnone {
|
|
; CHECK-LABEL: test2:
|
|
; CHECK: # BB#0:
|
|
; CHECK-NEXT: leaq -1(%rdi), %rcx
|
|
; CHECK-NEXT: xorl %eax, %eax
|
|
; CHECK-NEXT: testq %rcx, %rdi
|
|
; CHECK-NEXT: sete %al
|
|
; CHECK-NEXT: retq
|
|
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
|
|
%cmp = icmp ult i64 %count, 2
|
|
%conv = zext i1 %cmp to i32
|
|
ret i32 %conv
|
|
}
|
|
|
|
define i32 @test3(i64 %x) nounwind readnone {
|
|
; CHECK-LABEL: test3:
|
|
; CHECK: # BB#0:
|
|
; CHECK-NEXT: popcntq %rdi, %rax
|
|
; CHECK-NEXT: andb $63, %al
|
|
; CHECK-NEXT: cmpb $2, %al
|
|
; CHECK-NEXT: sbbl %eax, %eax
|
|
; CHECK-NEXT: andl $1, %eax
|
|
; CHECK-NEXT: retq
|
|
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
|
|
%cast = trunc i64 %count to i6 ; Too small for 0-64
|
|
%cmp = icmp ult i6 %cast, 2
|
|
%conv = zext i1 %cmp to i32
|
|
ret i32 %conv
|
|
}
|