1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -verify-machineinstrs | FileCheck %s 3 4; It's tempting to eliminate the testl instruction here and just use the 5; EFLAGS value from the incl, however it can't be known whether the add 6; will overflow, and if it does the incl would set OF, and the 7; subsequent setg would return true. 8 9target 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" 10target triple = "i386-apple-darwin9.6" 11 12define i32 @f(i32 %j) nounwind readnone { 13; CHECK-LABEL: f: 14; CHECK: ## %bb.0: ## %entry 15; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx 16; CHECK-NEXT: incl %ecx 17; CHECK-NEXT: xorl %eax, %eax 18; CHECK-NEXT: testl %ecx, %ecx 19; CHECK-NEXT: setg %al 20; CHECK-NEXT: retl 21entry: 22 %0 = add i32 %j, 1 ; <i32> [#uses=1] 23 %1 = icmp sgt i32 %0, 0 ; <i1> [#uses=1] 24 %2 = zext i1 %1 to i32 ; <i32> [#uses=1] 25 ret i32 %2 26} 27