File: 2007-08-06-MisinterpretBranch.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (18 lines) | stat: -rw-r--r-- 574 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; RUN: opt < %s -indvars -adce -simplifycfg -S | grep "icmp s"
; PR1598

define i32 @f(i32 %a, i32 %b, i32 %x, i32 %y) {
entry:
	%tmp3 = icmp eq i32 %a, %b		; <i1> [#uses=1]
	br i1 %tmp3, label %return, label %bb

bb:		; preds = %bb, %entry
	%x_addr.0 = phi i32 [ %tmp6, %bb ], [ %x, %entry ]		; <i32> [#uses=1]
	%tmp6 = add i32 %x_addr.0, 1		; <i32> [#uses=3]
	%tmp9 = icmp slt i32 %tmp6, %y		; <i1> [#uses=1]
	br i1 %tmp9, label %bb, label %return

return:		; preds = %bb, %entry
	%x_addr.1 = phi i32 [ %x, %entry ], [ %tmp6, %bb ]		; <i32> [#uses=1]
	ret i32 %x_addr.1
}