51 lines
1.3 KiB
LLVM
51 lines
1.3 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-- < %s | FileCheck %s
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; No attributes, should not use idiv
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define i32 @test1(i32 inreg %x) {
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; CHECK-LABEL: test1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movl %eax, %ecx
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; CHECK-NEXT: sarl $31, %ecx
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; CHECK-NEXT: shrl $28, %ecx
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; CHECK-NEXT: addl %ecx, %eax
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; CHECK-NEXT: sarl $4, %eax
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; CHECK-NEXT: retl
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entry:
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%div = sdiv i32 %x, 16
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ret i32 %div
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}
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; Has minsize (-Oz) attribute, should generate idiv
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define i32 @test2(i32 inreg %x) minsize {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushl $16
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; CHECK-NEXT: .cfi_adjust_cfa_offset 4
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; CHECK-NEXT: popl %ecx
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; CHECK-NEXT: .cfi_adjust_cfa_offset -4
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; CHECK-NEXT: cltd
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; CHECK-NEXT: idivl %ecx
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; CHECK-NEXT: retl
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entry:
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%div = sdiv i32 %x, 16
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ret i32 %div
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}
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; Has optsize (-Os) attribute, should not generate idiv
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define i32 @test3(i32 inreg %x) optsize {
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; CHECK-LABEL: test3:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movl %eax, %ecx
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; CHECK-NEXT: sarl $31, %ecx
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; CHECK-NEXT: shrl $28, %ecx
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; CHECK-NEXT: addl %ecx, %eax
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; CHECK-NEXT: sarl $4, %eax
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; CHECK-NEXT: retl
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entry:
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%div = sdiv i32 %x, 16
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ret i32 %div
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}
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