forked from OSchip/llvm-project
56 lines
1.6 KiB
LLVM
56 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+avx | FileCheck %s --check-prefix=X32
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefix=X64
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define i1 @mulhioverflow(i64 %a, i64 %b, i64 %c) nounwind {
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; X32-LABEL: mulhioverflow:
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; X32: # BB#0:
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; X32-NEXT: pushl %ebp
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; X32-NEXT: movl %esp, %ebp
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; X32-NEXT: pushl %esi
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; X32-NEXT: andl $-8, %esp
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; X32-NEXT: subl $24, %esp
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; X32-NEXT: movl 24(%ebp), %esi
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; X32-NEXT: movl %esp, %eax
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; X32-NEXT: pushl $0
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; X32-NEXT: pushl $0
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; X32-NEXT: pushl 20(%ebp)
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; X32-NEXT: pushl 16(%ebp)
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; X32-NEXT: pushl $0
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; X32-NEXT: pushl $0
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; X32-NEXT: pushl 12(%ebp)
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; X32-NEXT: pushl 8(%ebp)
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; X32-NEXT: pushl %eax
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; X32-NEXT: calll __multi3
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; X32-NEXT: addl $32, %esp
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; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X32-NEXT: andl $1, %esi
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; X32-NEXT: addl {{[0-9]+}}(%esp), %esi
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; X32-NEXT: adcl $0, %eax
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; X32-NEXT: setb %al
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; X32-NEXT: leal -4(%ebp), %esp
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; X32-NEXT: popl %esi
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; X32-NEXT: popl %ebp
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; X32-NEXT: retl
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;
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; X64-LABEL: mulhioverflow:
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; X64: # BB#0:
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; X64-NEXT: movq %rdx, %rcx
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; X64-NEXT: movq %rdi, %rax
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; X64-NEXT: mulq %rsi
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; X64-NEXT: andl $1, %ecx
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; X64-NEXT: addq %rdx, %rcx
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; X64-NEXT: setb %al
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; X64-NEXT: retq
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%1 = zext i64 %a to i128
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%2 = zext i64 %b to i128
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%3 = mul i128 %1, %2
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%4 = lshr i128 %3, 64
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%5 = and i64 %c, 1
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%6 = zext i64 %5 to i128
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%7 = add i128 %4, %6
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%8 = lshr i128 %7, 64
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%9 = trunc i128 %8 to i1
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ret i1 %9
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}
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