forked from OSchip/llvm-project
86 lines
2.5 KiB
LLVM
86 lines
2.5 KiB
LLVM
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; 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: cltd
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; X86-NEXT: idivl %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: cltd
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; X64-NEXT: idivl %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 = srem 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: movl {{[0-9]+}}(%esp), %ecx
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; X86-NEXT: movl $1717986919, %edx # imm = 0x66666667
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; X86-NEXT: movl %ecx, %eax
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; X86-NEXT: imull %edx
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; X86-NEXT: movl %edx, %eax
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; X86-NEXT: shrl $31, %eax
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; X86-NEXT: sarl %edx
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; X86-NEXT: addl %eax, %edx
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; X86-NEXT: leal (%edx,%edx,4), %eax
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; X86-NEXT: cmpl %eax, %ecx
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; X86-NEXT: movl $42, %eax
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; X86-NEXT: je .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: movslq %edi, %rax
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; X64-NEXT: imulq $1717986919, %rax, %rcx # imm = 0x66666667
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; X64-NEXT: movq %rcx, %rdx
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; X64-NEXT: shrq $63, %rdx
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; X64-NEXT: sarq $33, %rcx
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; X64-NEXT: addl %edx, %ecx
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; X64-NEXT: leal (%rcx,%rcx,4), %ecx
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; X64-NEXT: cmpl %ecx, %eax
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; X64-NEXT: movl $42, %ecx
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; X64-NEXT: movl $-10, %eax
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; X64-NEXT: cmovel %ecx, %eax
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; X64-NEXT: retq
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%rem = srem 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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