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[X86] Add PR13897 test case (i128 mul on i686)

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llvm-svn: 356786
This commit is contained in:
Simon Pilgrim 2019-03-22 17:52:21 +00:00
parent 717af54804
commit de464bbbda
1 changed files with 65 additions and 0 deletions
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65
test/CodeGen/X86/mul128.ll
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@ -99,3 +99,68 @@ define i128 @foo(i128 %t, i128 %u) {
%k = mul i128 %t, %u
ret i128 %k
}
@aaa = external global i128
@bbb = external global i128
define void @PR13897() nounwind {
; X64-LABEL: PR13897:
; X64: # %bb.0: # %"0x0"
; X64-NEXT: movl {{.*}}(%rip), %ecx
; X64-NEXT: movabsq $4294967297, %rdx # imm = 0x100000001
; X64-NEXT: movq %rcx, %rax
; X64-NEXT: mulq %rdx
; X64-NEXT: addq %rcx, %rdx
; X64-NEXT: shlq $32, %rcx
; X64-NEXT: addq %rcx, %rdx
; X64-NEXT: movq %rax, {{.*}}(%rip)
; X64-NEXT: movq %rdx, aaa+{{.*}}(%rip)
; X64-NEXT: retq
;
; X86-LABEL: PR13897:
; X86: # %bb.0: # %"0x0"
; X86-NEXT: pushl %ebp
; X86-NEXT: pushl %ebx
; X86-NEXT: pushl %edi
; X86-NEXT: pushl %esi
; X86-NEXT: pushl %eax
; X86-NEXT: movl bbb, %eax
; X86-NEXT: movl %eax, (%esp) # 4-byte Spill
; X86-NEXT: movl $1, %ebx
; X86-NEXT: mull %ebx
; X86-NEXT: movl %edx, %esi
; X86-NEXT: movl %eax, %edi
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: mull %ebx
; X86-NEXT: movl %eax, %ebx
; X86-NEXT: addl %esi, %ebx
; X86-NEXT: movl %edx, %ebp
; X86-NEXT: adcl $0, %ebp
; X86-NEXT: addl %edi, %ebx
; X86-NEXT: adcl %esi, %ebp
; X86-NEXT: setb %cl
; X86-NEXT: addl %eax, %ebp
; X86-NEXT: movzbl %cl, %eax
; X86-NEXT: adcl %edx, %eax
; X86-NEXT: addl %edi, %ebp
; X86-NEXT: adcl %esi, %eax
; X86-NEXT: addl (%esp), %eax # 4-byte Folded Reload
; X86-NEXT: movl %edi, aaa
; X86-NEXT: movl %ebx, aaa+4
; X86-NEXT: movl %ebp, aaa+8
; X86-NEXT: movl %eax, aaa+12
; X86-NEXT: addl $4, %esp
; X86-NEXT: popl %esi
; X86-NEXT: popl %edi
; X86-NEXT: popl %ebx
; X86-NEXT: popl %ebp
; X86-NEXT: retl
"0x0":
%0 = load i128, i128* @bbb
%1 = and i128 %0, 4294967295
%2 = shl i128 %0, 96
%3 = mul i128 %1, 18446744078004518913
%4 = add i128 %3, %2
store i128 %4, i128* @aaa
ret void
}