File: peep-test-2.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -verify-machineinstrs | FileCheck %s

; It's tempting to eliminate the testl instruction here and just use the
; EFLAGS value from the incl, however it can't be known whether the add
; will overflow, and if it does the incl would set OF, and the
; subsequent setg would return true.

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9.6"

define i32 @f(i32 %j) nounwind readnone {
; CHECK-LABEL: f:
; CHECK:       ## %bb.0: ## %entry
; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT:    incl %ecx
; CHECK-NEXT:    xorl %eax, %eax
; CHECK-NEXT:    testl %ecx, %ecx
; CHECK-NEXT:    setg %al
; CHECK-NEXT:    retl
entry:
	%0 = add i32 %j, 1		; <i32> [#uses=1]
	%1 = icmp sgt i32 %0, 0		; <i1> [#uses=1]
	%2 = zext i1 %1 to i32		; <i32> [#uses=1]
	ret i32 %2
}