File: 2011-04-15-AndVFlagPeepholeBug.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (22 lines) | stat: -rw-r--r-- 530 bytes parent folder | download | duplicates (37) 
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: blle _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(...)