1 ; RUN: llc < %s -mtriple=arm64-eabi | FileCheck %s 2 3 ; Optimize (x > -1) to (x >= 0) etc. 4 ; Optimize (cmp (add / sub), 0): eliminate the subs used to update flag 5 ; for comparison only 6 ; rdar://10233472 7 8 define i32 @t1(i64 %a) { 9 ; CHECK-LABEL: t1: 10 ; CHECK: // %bb.0: 11 ; CHECK-NEXT: lsr x8, x0, #63 12 ; CHECK-NEXT: eor w0, w8, #0x1 13 ; CHECK-NEXT: ret 14 ; 15 %cmp = icmp sgt i64 %a, -1 16 %conv = zext i1 %cmp to i32 17 ret i32 %conv 18 } 19
