File: 2011-04-15-AndVFlagPeepholeBug.ll

package info (click to toggle)
llvm-toolchain-3.5 1%3A3.5.2-3~bpo8%2B2
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports
  • size: 283,276 kB
  • sloc: cpp: 1,884,580; ansic: 310,787; objc: 86,612; python: 79,608; asm: 65,866; sh: 9,829; makefile: 6,068; perl: 5,589; ml: 5,254; pascal: 3,285; lisp: 1,640; xml: 686; cs: 239; csh: 117
file content (22 lines) | stat: -rw-r--r-- 532 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
; RUN: llc < %s -mtriple=thumbv7-apple-darwin10 | FileCheck %s

; CHECK: _f
; CHECK-NOT: ands
; CHECK: cmp
; CHECK: blxle _g

define i32 @f(i32 %a, i32 %b) nounwind ssp {
entry:
  %and = and i32 %b, %a
  %cmp = icmp slt i32 %and, 1
  br i1 %cmp, label %if.then, label %if.end

if.then:                                          ; preds = %entry
  tail call void (...)* @g(i32 %a, i32 %b) nounwind
  br label %if.end

if.end:                                           ; preds = %if.then, %entry
  ret i32 %and
}

declare void @g(...)