From 55ba816883842e793cdeb32fcb805c4e011b527f Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Fri, 29 Jul 2011 03:05:32 +0000
Subject: Misc optimizer+codegen work for 'cmpxchg' and 'atomicrmw'.  They
 appear to be working on x86 (at least for trivial testcases); other
 architectures will need more work so that they actually emit the appropriate
 instructions for orderings stricter than 'monotonic'. (As far as I can tell,
 the ARM, PPC, Mips, and Alpha backends need such changes.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136457 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/IPO/MergeFunctions.cpp | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

(limited to 'lib/Transforms/IPO/MergeFunctions.cpp')

diff --git a/lib/Transforms/IPO/MergeFunctions.cpp b/lib/Transforms/IPO/MergeFunctions.cpp
index f3d7e46ad2..e46375b955 100644
--- a/lib/Transforms/IPO/MergeFunctions.cpp
+++ b/lib/Transforms/IPO/MergeFunctions.cpp
@@ -317,22 +317,22 @@ bool FunctionComparator::isEquivalentOperation(const Instruction *I1,
   if (const InvokeInst *CI = dyn_cast<InvokeInst>(I1))
     return CI->getCallingConv() == cast<InvokeInst>(I2)->getCallingConv() &&
            CI->getAttributes() == cast<InvokeInst>(I2)->getAttributes();
-  if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(I1)) {
-    if (IVI->getNumIndices() != cast<InsertValueInst>(I2)->getNumIndices())
-      return false;
-    for (unsigned i = 0, e = IVI->getNumIndices(); i != e; ++i)
-      if (IVI->idx_begin()[i] != cast<InsertValueInst>(I2)->idx_begin()[i])
-        return false;
-    return true;
-  }
-  if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(I1)) {
-    if (EVI->getNumIndices() != cast<ExtractValueInst>(I2)->getNumIndices())
-      return false;
-    for (unsigned i = 0, e = EVI->getNumIndices(); i != e; ++i)
-      if (EVI->idx_begin()[i] != cast<ExtractValueInst>(I2)->idx_begin()[i])
-        return false;
-    return true;
-  }
+  if (const InsertValueInst *IVI = dyn_cast<InsertValueInst>(I1))
+    return IVI->getIndices() == cast<InsertValueInst>(I2)->getIndices();
+  if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(I1))
+    return EVI->getIndices() == cast<ExtractValueInst>(I2)->getIndices();
+  if (const FenceInst *FI = dyn_cast<FenceInst>(I1))
+    return FI->getOrdering() == cast<FenceInst>(I2)->getOrdering() &&
+           FI->getSynchScope() == cast<FenceInst>(I2)->getSynchScope();
+  if (const AtomicCmpXchgInst *CXI = dyn_cast<AtomicCmpXchgInst>(I1))
+    return CXI->isVolatile() == cast<AtomicCmpXchgInst>(I2)->isVolatile() &&
+           CXI->getOrdering() == cast<AtomicCmpXchgInst>(I2)->getOrdering() &&
+           CXI->getSynchScope() == cast<AtomicCmpXchgInst>(I2)->getSynchScope();
+  if (const AtomicRMWInst *RMWI = dyn_cast<AtomicRMWInst>(I1))
+    return RMWI->getOperation() == cast<AtomicRMWInst>(I2)->getOperation() &&
+           RMWI->isVolatile() == cast<AtomicRMWInst>(I2)->isVolatile() &&
+           RMWI->getOrdering() == cast<AtomicRMWInst>(I2)->getOrdering() &&
+           RMWI->getSynchScope() == cast<AtomicRMWInst>(I2)->getSynchScope();
 
   return true;
 }
-- 
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