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