From 96142de3f016086f453b013d109dcacd5517159e Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Thu, 10 May 2007 22:34:59 +0000
Subject: Allow multiple invokes per landing pad. This (probably) fixes PR1410.

llvm-svn: 36977
---
 llvm/lib/CodeGen/MachineModuleInfo.cpp | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

(limited to 'llvm/lib/CodeGen/MachineModuleInfo.cpp')

diff --git a/llvm/lib/CodeGen/MachineModuleInfo.cpp b/llvm/lib/CodeGen/MachineModuleInfo.cpp
index 399fb0d..33872fa 100644
--- a/llvm/lib/CodeGen/MachineModuleInfo.cpp
+++ b/llvm/lib/CodeGen/MachineModuleInfo.cpp
@@ -1669,8 +1669,8 @@ LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
 void MachineModuleInfo::addInvoke(MachineBasicBlock *LandingPad,
                                   unsigned BeginLabel, unsigned EndLabel) {
   LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
-  if (!LP.BeginLabel) LP.BeginLabel = BeginLabel;  
-  LP.EndLabel = EndLabel;  
+  LP.BeginLabels.push_back(BeginLabel);
+  LP.EndLabels.push_back(EndLabel);
 }
 
 /// addLandingPad - Provide the label of a try LandingPad block.
@@ -1711,16 +1711,29 @@ void MachineModuleInfo::setIsFilterLandingPad(MachineBasicBlock *LandingPad) {
 void MachineModuleInfo::TidyLandingPads() {
   for (unsigned i = 0; i != LandingPads.size(); ) {
     LandingPadInfo &LandingPad = LandingPads[i];
-    LandingPad.BeginLabel = MappedLabel(LandingPad.BeginLabel);
-    LandingPad.EndLabel = MappedLabel(LandingPad.EndLabel);
     LandingPad.LandingPadLabel = MappedLabel(LandingPad.LandingPadLabel);
-    
-    if (!LandingPad.BeginLabel ||
-        !LandingPad.EndLabel ||
-        !LandingPad.LandingPadLabel) {
+
+    if (!LandingPad.LandingPadLabel) {
       LandingPads.erase(LandingPads.begin() + i);
       continue;
     }
+          
+    for (unsigned j=0; j != LandingPads[i].BeginLabels.size(); ) {
+      unsigned BeginLabel = MappedLabel(LandingPad.BeginLabels[j]);
+      unsigned EndLabel = MappedLabel(LandingPad.EndLabels[j]);
+            
+          
+      if (!BeginLabel || !EndLabel) {
+        printf("Tidy: %d, %d, %d\n", BeginLabel, EndLabel, LandingPad.LandingPadLabel);
+        LandingPad.BeginLabels.erase(LandingPad.BeginLabels.begin() + j);
+        LandingPad.EndLabels.erase(LandingPad.EndLabels.begin() + j);
+        continue;
+      }
+
+      LandingPad.BeginLabels[j] = BeginLabel;
+      LandingPad.EndLabels[j] = EndLabel;
+      ++j;
+    }
     
     ++i;
   }
-- 
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