19 lines
440 B
LLVM
19 lines
440 B
LLVM
; RUN: llc < %s -mtriple=arm64-eabi | FileCheck %s
|
|
|
|
; Optimize (x > -1) to (x >= 0) etc.
|
|
; Optimize (cmp (add / sub), 0): eliminate the subs used to update flag
|
|
; for comparison only
|
|
; rdar://10233472
|
|
|
|
define i32 @t1(i64 %a) {
|
|
; CHECK-LABEL: t1:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: lsr x8, x0, #63
|
|
; CHECK-NEXT: eor w0, w8, #0x1
|
|
; CHECK-NEXT: ret
|
|
;
|
|
%cmp = icmp sgt i64 %a, -1
|
|
%conv = zext i1 %cmp to i32
|
|
ret i32 %conv
|
|
}
|