From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 23 Oct 2007 20:14:40 +0000 (+0000)
Subject: It's possible to commute instrctions with more than 3 operands.
X-Git-Tag: android-x86-6.0-r1~1003^2~32126
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=7bb175b4d12e3a22a66a26f0e9ba2ebd4406acc7;p=android-x86%2Fexternal-llvm.git

It's possible to commute instrctions with more than 3 operands.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43256 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index 53b08d6bf0f..277257bd61d 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -143,7 +143,7 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
             // so, swap the B and C operands.  This makes the live ranges of A
             // and C joinable.
             // FIXME: This code also works for A := B op C instructions.
-            if ((TID->Flags & M_COMMUTABLE) && mi->getNumOperands() == 3) {
+            if ((TID->Flags & M_COMMUTABLE) && mi->getNumOperands() >= 3) {
               assert(mi->getOperand(3-si).isRegister() &&
                      "Not a proper commutative instruction!");
               unsigned regC = mi->getOperand(3-si).getReg();