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linux-packaging-mono/external/llvm/test/CodeGen/AArch64/arm64-icmp-opt.ll
Xamarin Public Jenkins (auto-signing) f32dbaf0b2 Imported Upstream version 5.18.0.225
Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5
2018-12-21 19:01:49 +00:00

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
}