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| author | Amaury Sechet <deadalnix@gmail.com> | 2017-03-01 23:31:19 +0000 |
|---|---|---|
| committer | Amaury Sechet <deadalnix@gmail.com> | 2017-03-01 23:31:19 +0000 |
| commit | 683f5743f670ca928ce02a2e417f6a0de89c17b1 (patch) | |
| tree | 9d26aff23fcd5da4595e6e1eb2f78489d0280abe /llvm/test/CodeGen/X86/overflow.ll | |
| parent | 1c9216b003c88eefacac52a448ae9349a70e474a (diff) | |
| download | bcm5719-llvm-683f5743f670ca928ce02a2e417f6a0de89c17b1.tar.gz bcm5719-llvm-683f5743f670ca928ce02a2e417f6a0de89c17b1.zip | |
Improve mulhi overflow test. NFC
llvm-svn: 296709
Diffstat (limited to 'llvm/test/CodeGen/X86/overflow.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/overflow.ll | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/llvm/test/CodeGen/X86/overflow.ll b/llvm/test/CodeGen/X86/overflow.ll index 7e67b9df469..37ca5e1c0eb 100644 --- a/llvm/test/CodeGen/X86/overflow.ll +++ b/llvm/test/CodeGen/X86/overflow.ll @@ -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 16(%ebp) ; X32-NEXT: pushl $0 ; X32-NEXT: pushl $0 +; X32-NEXT: pushl 16(%ebp) ; 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 } |
