Do not lower malloc's to pass "sizeof" expressions like this:

  ltmp_0_7 = malloc(((unsigned )(&(((signed char (*)[784])/*NULL*/0)[1u]))));

Instead, just emit the literal constant, like this:

  ltmp_0_7 = malloc(784u);

This works around a bug in ICC 8.1 compiling the CBE generated code.  :-(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20415 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index dfd06a73e71fbed5094e5be20586ce3ddf55c902..8505917a44e1670cd87d24233a3d8076f018d20b 100644 (file)
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1720,7 +1720,7 @@ void CWriter::visitVAArgInst(VAArgInst &I) {
 
 bool CTargetMachine::addPassesToEmitAssembly(PassManager &PM, std::ostream &o) {
   PM.add(createLowerGCPass());
-  PM.add(createLowerAllocationsPass());
+  PM.add(createLowerAllocationsPass(true));
   PM.add(createLowerInvokePass());
   PM.add(new CBackendNameAllUsedStructs());
   PM.add(new CWriter(o, getIntrinsicLowering()));

diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index dfd06a73e71fbed5094e5be20586ce3ddf55c902..8505917a44e1670cd87d24233a3d8076f018d20b 100644 (file)
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -1720,7 +1720,7 @@ void CWriter::visitVAArgInst(VAArgInst &I) {
 
 bool CTargetMachine::addPassesToEmitAssembly(PassManager &PM, std::ostream &o) {
   PM.add(createLowerGCPass());
-  PM.add(createLowerAllocationsPass());
+  PM.add(createLowerAllocationsPass(true));
   PM.add(createLowerInvokePass());
   PM.add(new CBackendNameAllUsedStructs());
   PM.add(new CWriter(o, getIntrinsicLowering()));