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23 lines
591 B
LLVM
23 lines
591 B
LLVM
; RUN: llvm-as < %s | llc -march=arm -stats |& \
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; RUN: grep {3 .*Number of machine instrs printed}
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; RUN: llvm-as < %s | llc -march=thumb -stats |& \
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; RUN: grep {4 .*Number of machine instrs printed}
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;; Integer absolute value, should produce something as good as: ARM:
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;; add r3, r0, r0, asr #31
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;; eor r0, r3, r0, asr #31
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;; bx lr
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;; Thumb:
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;; asr r2, r0, #31
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;; add r0, r0, r2
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;; eor r0, r2
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;; bx lr
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define i32 @test(i32 %a) {
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%tmp1neg = sub i32 0, %a
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%b = icmp sgt i32 %a, -1
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%abs = select i1 %b, i32 %a, i32 %tmp1neg
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ret i32 %abs
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}
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