File: phi-uses-value-multiple-times.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (38 lines) | stat: -rw-r--r-- 916 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
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
 
; REQUIRES: asserts
; RUN: opt < %s -passes=indvars -disable-output -stats -info-output-file - | FileCheck %s
; Check that IndVarSimplify is not creating unnecessary canonical IVs
; that will never be used.
; CHECK-NOT: indvars

target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"

@ue = external global i64

define i32 @foo(i1 %arg) nounwind {
entry:
	br label %bb38.i

bb14.i27:
	%t0 = load i64, ptr @ue, align 8
	%t1 = sub i64 %t0, %i.0.i35
	%t2 = add i64 %t1, 1
	br i1 %arg, label %bb15.i28, label %bb19.i31

bb15.i28:
	br label %bb19.i31

bb19.i31:
	%y.0.i = phi i64 [ %t2, %bb15.i28 ], [ %t2, %bb14.i27 ]
	br label %bb35.i

bb35.i:
	br i1 %arg, label %bb37.i, label %bb14.i27

bb37.i:
	%t3 = add i64 %i.0.i35, 1
	br label %bb38.i

bb38.i:
	%i.0.i35 = phi i64 [ 1, %entry ], [ %t3, %bb37.i ]
	br label %bb35.i
}