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Improve mulhi overflow test. NFC

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296709 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Amaury Sechet 2017-03-01 23:31:19 +00:00
parent f58f29327f
commit 2880f2df26
1 changed files with 26 additions and 15 deletions
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41
test/CodeGen/X86/overflow.ll
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@ -2,36 +2,47 @@
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+avx | FileCheck %s --check-prefix=X32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefix=X64
define i1 @mulhioverflow(i64 %a, i64 %b, i64 %c) nounwind {
define i128 @mulhioverflow(i64 %a, i64 %b, i64 %c) nounwind {
; X32-LABEL: mulhioverflow:
; X32: # BB#0:
; X32-NEXT: pushl %ebp
; X32-NEXT: movl %esp, %ebp
; X32-NEXT: pushl %edi
; X32-NEXT: pushl %esi
; X32-NEXT: andl $-8, %esp
; X32-NEXT: subl $24, %esp
; X32-NEXT: movl 24(%ebp), %esi
; X32-NEXT: subl $16, %esp
; X32-NEXT: movl 8(%ebp), %esi
; X32-NEXT: movl 28(%ebp), %edi
; X32-NEXT: movl %esp, %eax
; X32-NEXT: pushl $0
; X32-NEXT: pushl $0
; X32-NEXT: pushl 24(%ebp)
; X32-NEXT: pushl 20(%ebp)
; X32-NEXT: pushl $0
; X32-NEXT: pushl $0
; X32-NEXT: pushl 16(%ebp)
; X32-NEXT: pushl $0
; X32-NEXT: pushl $0
; X32-NEXT: pushl 12(%ebp)
; X32-NEXT: pushl 8(%ebp)
; X32-NEXT: pushl %eax
; X32-NEXT: calll __multi3
; X32-NEXT: addl $32, %esp
; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
; X32-NEXT: andl $1, %esi
; X32-NEXT: addl {{[0-9]+}}(%esp), %esi
; X32-NEXT: andl $1, %edi
; X32-NEXT: xorl %ecx, %ecx
; X32-NEXT: addl {{[0-9]+}}(%esp), %edi
; X32-NEXT: adcl $0, %eax
; X32-NEXT: setb %al
; X32-NEXT: leal -4(%ebp), %esp
; X32-NEXT: adcl $0, %ecx
; X32-NEXT: sbbl %edx, %edx
; X32-NEXT: andl $1, %edx
; X32-NEXT: movl %edi, (%esi)
; X32-NEXT: movl %eax, 4(%esi)
; X32-NEXT: movl %ecx, 8(%esi)
; X32-NEXT: movl %edx, 12(%esi)
; X32-NEXT: movl %esi, %eax
; X32-NEXT: leal -8(%ebp), %esp
; X32-NEXT: popl %esi
; X32-NEXT: popl %edi
; X32-NEXT: popl %ebp
; X32-NEXT: retl
; X32-NEXT: retl $4
;
; X64-LABEL: mulhioverflow:
; X64: # BB#0:
@ -40,7 +51,9 @@ define i1 @mulhioverflow(i64 %a, i64 %b, i64 %c) nounwind {
; X64-NEXT: mulq %rsi
; X64-NEXT: andl $1, %ecx
; X64-NEXT: addq %rdx, %rcx
; X64-NEXT: setb %al
; X64-NEXT: sbbq %rdx, %rdx
; X64-NEXT: andl $1, %edx
; X64-NEXT: movq %rcx, %rax
; X64-NEXT: retq
%1 = zext i64 %a to i128
%2 = zext i64 %b to i128
@ -49,7 +62,5 @@ define i1 @mulhioverflow(i64 %a, i64 %b, i64 %c) nounwind {
%5 = and i64 %c, 1
%6 = zext i64 %5 to i128
%7 = add i128 %4, %6
%8 = lshr i128 %7, 64
%9 = trunc i128 %8 to i1
ret i1 %9
ret i128 %7
}