llvm-6502/test/CodeGen/ARM/iabs.ll
2009-06-24 06:36:07 +00:00

16 lines
409 B
LLVM

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