| ; 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 |
| } |
