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Fix PR1323 : we haven't updated phi nodes in good manner :)

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llvm-svn: 35963
This commit is contained in:
Anton Korobeynikov 2007-04-13 06:53:51 +00:00
parent e7cab7b7a4
commit 5bb6590218
2 changed files with 28 additions and 0 deletions
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1
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -4634,6 +4634,7 @@ void SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB, MachineFunction &MF,
if (PHIBB == BitTestCases[i].Default) { if (PHIBB == BitTestCases[i].Default) {
PHI->addRegOperand(PHINodesToUpdate[pi].second, false); PHI->addRegOperand(PHINodesToUpdate[pi].second, false);
PHI->addMachineBasicBlockOperand(BitTestCases[i].Parent); PHI->addMachineBasicBlockOperand(BitTestCases[i].Parent);
PHI->addRegOperand(PHINodesToUpdate[pi].second, false);
PHI->addMachineBasicBlockOperand(BitTestCases[i].Cases.back().ThisBB); PHI->addMachineBasicBlockOperand(BitTestCases[i].Cases.back().ThisBB);
} }
// One of "cases" BB. // One of "cases" BB.

27
test/CodeGen/Generic/2007-04-13-SwitchLowerBadPhi.ll Normal file
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@ -0,0 +1,27 @@
; RUN: llvm-as < %s | llc -fast
; PR 1323
; ModuleID = 'test.bc'
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"
target triple = "i686-apple-darwin8"
%struct.comp = type { i8*, i32, i8*, [3 x i8], i32 }
define void @regbranch() {
cond_next240.i:
br i1 false, label %cond_true251.i, label %cond_next272.i
cond_true251.i: ; preds = %cond_next240.i
switch i8 0, label %cond_next272.i [
i8 42, label %bb268.i
i8 43, label %bb268.i
i8 63, label %bb268.i
]
bb268.i: ; preds = %cond_true251.i, %cond_true251.i, %cond_true251.i
br label %cond_next272.i
cond_next272.i: ; preds = %bb268.i, %cond_true251.i, %cond_next240.i
%len.2.i = phi i32 [ 0, %bb268.i ], [ 0, %cond_next240.i ], [ 0, %cond_true251.i ] ; <i32> [#uses=1]
%tmp278.i = icmp eq i32 %len.2.i, 1 ; <i1> [#uses=0]
ret void
}