llvm/test/Transforms/SimplifyCFG/2008-07-13-InfLoopMiscompile.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

37 lines
1.4 KiB
LLVM

; RUN: opt < %s -simplifycfg -S | grep {%outval = phi i32 .*mux}
; PR2540
; Outval should end up with a select from 0/2, not all constants.
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-f80:32:32"
target triple = "i386-pc-linux-gnu"
@g_37 = common global i32 0 ; <i32*> [#uses=1]
@.str = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1]
define i32 @main() nounwind {
entry:
%l = load i32* @g_37, align 4 ; <i32> [#uses=1]
%cmpa = icmp ne i32 %l, 0 ; <i1> [#uses=3]
br i1 %cmpa, label %func_1.exit, label %mooseblock
mooseblock: ; preds = %entry
%cmpb = icmp eq i1 %cmpa, false ; <i1> [#uses=2]
br i1 %cmpb, label %monkeyblock, label %beeblock
monkeyblock: ; preds = %monkeyblock, %mooseblock
br i1 %cmpb, label %cowblock, label %monkeyblock
beeblock: ; preds = %beeblock, %mooseblock
br i1 %cmpa, label %cowblock, label %beeblock
cowblock: ; preds = %beeblock, %monkeyblock
%cowval = phi i32 [ 2, %beeblock ], [ 0, %monkeyblock ] ; <i32> [#uses=1]
br label %func_1.exit
func_1.exit: ; preds = %cowblock, %entry
%outval = phi i32 [ %cowval, %cowblock ], [ 1, %entry ] ; <i32> [#uses=1]
%pout = tail call i32 (i8*, ...)* @printf( i8* noalias getelementptr ([4 x i8]* @.str, i32 0, i32 0), i32 %outval ) nounwind ; <i32> [#uses=0]
ret i32 0
}
declare i32 @printf(i8*, ...) nounwind