72 lines
2.1 KiB
LLVM
72 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=i686-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,X86
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,X64
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; On X86, division in expensive. BuildRemEqFold should therefore run even
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; when optimizing for size. Only optimizing for minimum size retains a plain div.
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define i32 @test_minsize(i32 %X) optsize minsize nounwind readnone {
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; X86-LABEL: test_minsize:
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; X86: # %bb.0:
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; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: pushl $5
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; X86-NEXT: popl %ecx
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; X86-NEXT: xorl %edx, %edx
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; X86-NEXT: divl %ecx
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; X86-NEXT: testl %edx, %edx
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; X86-NEXT: je .LBB0_1
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; X86-NEXT: # %bb.2:
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; X86-NEXT: pushl $-10
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; X86-NEXT: popl %eax
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; X86-NEXT: retl
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; X86-NEXT: .LBB0_1:
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; X86-NEXT: pushl $42
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; X86-NEXT: popl %eax
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; X86-NEXT: retl
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;
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; X64-LABEL: test_minsize:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: pushq $5
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; X64-NEXT: popq %rcx
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; X64-NEXT: xorl %edx, %edx
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; X64-NEXT: divl %ecx
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; X64-NEXT: testl %edx, %edx
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; X64-NEXT: pushq $42
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; X64-NEXT: popq %rcx
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; X64-NEXT: pushq $-10
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; X64-NEXT: popq %rax
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; X64-NEXT: cmovel %ecx, %eax
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; X64-NEXT: retq
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%rem = urem i32 %X, 5
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%cmp = icmp eq i32 %rem, 0
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%ret = select i1 %cmp, i32 42, i32 -10
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ret i32 %ret
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}
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define i32 @test_optsize(i32 %X) optsize nounwind readnone {
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; X86-LABEL: test_optsize:
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; X86: # %bb.0:
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; X86-NEXT: imull $-858993459, {{[0-9]+}}(%esp), %eax # imm = 0xCCCCCCCD
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; X86-NEXT: cmpl $858993460, %eax # imm = 0x33333334
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; X86-NEXT: movl $42, %eax
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; X86-NEXT: jb .LBB1_2
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; X86-NEXT: # %bb.1:
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; X86-NEXT: movl $-10, %eax
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; X86-NEXT: .LBB1_2:
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; X86-NEXT: retl
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;
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; X64-LABEL: test_optsize:
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; X64: # %bb.0:
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; X64-NEXT: imull $-858993459, %edi, %eax # imm = 0xCCCCCCCD
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; X64-NEXT: cmpl $858993460, %eax # imm = 0x33333334
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; X64-NEXT: movl $42, %ecx
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; X64-NEXT: movl $-10, %eax
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; X64-NEXT: cmovbl %ecx, %eax
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; X64-NEXT: retq
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%rem = urem i32 %X, 5
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%cmp = icmp eq i32 %rem, 0
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%ret = select i1 %cmp, i32 42, i32 -10
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ret i32 %ret
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}
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