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[X86] Regenerated popcnt combine tests

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274124 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Pilgrim 2016-06-29 13:54:03 +00:00
parent f7282f8ee5
commit d28b49f9ae
1 changed files with 24 additions and 14 deletions
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38
test/CodeGen/X86/ctpop-combine.ll
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@ -1,40 +1,50 @@
; RUN: llc -march=x86-64 -mcpu=corei7 < %s | FileCheck %s ; 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 declare i64 @llvm.ctpop.i64(i64) nounwind readnone
define i32 @test1(i64 %x) nounwind readnone { define i32 @test1(i64 %x) nounwind readnone {
; CHECK-LABEL: test1:
; CHECK: # BB#0:
; CHECK-NEXT: leaq -1(%rdi), %rax
; CHECK-NEXT: testq %rax, %rdi
; CHECK-NEXT: setne %al
; CHECK-NEXT: movzbl %al, %eax
; CHECK-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x) %count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cast = trunc i64 %count to i32 %cast = trunc i64 %count to i32
%cmp = icmp ugt i32 %cast, 1 %cmp = icmp ugt i32 %cast, 1
%conv = zext i1 %cmp to i32 %conv = zext i1 %cmp to i32
ret i32 %conv ret i32 %conv
; CHECK-LABEL: test1:
; CHECK: leaq -1([[A0:%rdi|%rcx]])
; CHECK-NEXT: testq
; CHECK-NEXT: setne
; CHECK: ret
} }
define i32 @test2(i64 %x) nounwind readnone { define i32 @test2(i64 %x) nounwind readnone {
; CHECK-LABEL: test2:
; CHECK: # BB#0:
; CHECK-NEXT: leaq -1(%rdi), %rax
; CHECK-NEXT: testq %rax, %rdi
; CHECK-NEXT: sete %al
; CHECK-NEXT: movzbl %al, %eax
; CHECK-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x) %count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cmp = icmp ult i64 %count, 2 %cmp = icmp ult i64 %count, 2
%conv = zext i1 %cmp to i32 %conv = zext i1 %cmp to i32
ret i32 %conv ret i32 %conv
; CHECK-LABEL: test2:
; CHECK: leaq -1([[A0]])
; CHECK-NEXT: testq
; CHECK-NEXT: sete
; CHECK: ret
} }
define i32 @test3(i64 %x) nounwind readnone { 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) %count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cast = trunc i64 %count to i6 ; Too small for 0-64 %cast = trunc i64 %count to i6 ; Too small for 0-64
%cmp = icmp ult i6 %cast, 2 %cmp = icmp ult i6 %cast, 2
%conv = zext i1 %cmp to i32 %conv = zext i1 %cmp to i32
ret i32 %conv ret i32 %conv
; CHECK-LABEL: test3:
; CHECK: cmpb $2
; CHECK: ret
} }