| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=i686-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,X86 |
| ; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s --check-prefixes=CHECK,X64 |
| |
| ; On X86, division in expensive. BuildRemEqFold should therefore run even |
| ; when optimizing for size. Only optimizing for minimum size retains a plain div. |
| |
| define i32 @test_minsize(i32 %X) optsize minsize nounwind readnone { |
| ; X86-LABEL: test_minsize: |
| ; X86: # %bb.0: |
| ; X86-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; X86-NEXT: pushl $5 |
| ; X86-NEXT: popl %ecx |
| ; X86-NEXT: xorl %edx, %edx |
| ; X86-NEXT: divl %ecx |
| ; X86-NEXT: testl %edx, %edx |
| ; X86-NEXT: je .LBB0_1 |
| ; X86-NEXT: # %bb.2: |
| ; X86-NEXT: pushl $-10 |
| ; X86-NEXT: popl %eax |
| ; X86-NEXT: retl |
| ; X86-NEXT: .LBB0_1: |
| ; X86-NEXT: pushl $42 |
| ; X86-NEXT: popl %eax |
| ; X86-NEXT: retl |
| ; |
| ; X64-LABEL: test_minsize: |
| ; X64: # %bb.0: |
| ; X64-NEXT: movl %edi, %eax |
| ; X64-NEXT: pushq $5 |
| ; X64-NEXT: popq %rcx |
| ; X64-NEXT: xorl %edx, %edx |
| ; X64-NEXT: divl %ecx |
| ; X64-NEXT: testl %edx, %edx |
| ; X64-NEXT: pushq $42 |
| ; X64-NEXT: popq %rcx |
| ; X64-NEXT: pushq $-10 |
| ; X64-NEXT: popq %rax |
| ; X64-NEXT: cmovel %ecx, %eax |
| ; X64-NEXT: retq |
| %rem = urem i32 %X, 5 |
| %cmp = icmp eq i32 %rem, 0 |
| %ret = select i1 %cmp, i32 42, i32 -10 |
| ret i32 %ret |
| } |
| |
| define i32 @test_optsize(i32 %X) optsize nounwind readnone { |
| ; X86-LABEL: test_optsize: |
| ; X86: # %bb.0: |
| ; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx |
| ; X86-NEXT: movl $-858993459, %edx # imm = 0xCCCCCCCD |
| ; X86-NEXT: movl %ecx, %eax |
| ; X86-NEXT: mull %edx |
| ; X86-NEXT: shrl $2, %edx |
| ; X86-NEXT: leal (%edx,%edx,4), %eax |
| ; X86-NEXT: cmpl %eax, %ecx |
| ; X86-NEXT: movl $42, %eax |
| ; X86-NEXT: je .LBB1_2 |
| ; X86-NEXT: # %bb.1: |
| ; X86-NEXT: movl $-10, %eax |
| ; X86-NEXT: .LBB1_2: |
| ; X86-NEXT: retl |
| ; |
| ; X64-LABEL: test_optsize: |
| ; X64: # %bb.0: |
| ; X64-NEXT: movl %edi, %eax |
| ; X64-NEXT: movl $3435973837, %ecx # imm = 0xCCCCCCCD |
| ; X64-NEXT: imulq %rax, %rcx |
| ; X64-NEXT: shrq $34, %rcx |
| ; X64-NEXT: leal (%rcx,%rcx,4), %eax |
| ; X64-NEXT: cmpl %eax, %edi |
| ; X64-NEXT: movl $42, %ecx |
| ; X64-NEXT: movl $-10, %eax |
| ; X64-NEXT: cmovel %ecx, %eax |
| ; X64-NEXT: retq |
| %rem = urem i32 %X, 5 |
| %cmp = icmp eq i32 %rem, 0 |
| %ret = select i1 %cmp, i32 42, i32 -10 |
| ret i32 %ret |
| } |