mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-03 14:21:30 +00:00
ef2c86f876
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141591 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
530 B
LLVM
23 lines
530 B
LLVM
; RUN: llc < %s -march=thumb -stats |& \
|
|
; RUN: grep {4 .*Number of machine instrs printed}
|
|
|
|
;; Integer absolute value, should produce something as good as:
|
|
;; Thumb:
|
|
;; movs r0, r0
|
|
;; bpl
|
|
;; rsb r0, r0, #0 (with opitmization, bpl + rsb is if-converted into rsbmi)
|
|
;; 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
|
|
; CHECK: movs r0, r0
|
|
; CHECK: bpl
|
|
; CHECK: rsb r0, r0, #0
|
|
; CHECK: bx lr
|
|
}
|
|
|
|
|