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authorNAKAMURA Takumi <geek4civic@gmail.com>2014-06-02 01:35:34 +0000
committerNAKAMURA Takumi <geek4civic@gmail.com>2014-06-02 01:35:34 +0000
commitdf1913982b1d09b6cf01bc10f8ca97f50bb22a1b (patch)
treeda8a4684b122595c6eeb22067226a0bb987bef7f /lib/IR
parent10ecbcbbf0babd0129ad066a51cbf948ff7a870c (diff)
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Instruction::isIdenticalToWhenDefined(): Check getNumOperands() in advance of std::equal(op) to appease MSVC Debug build.
MSVC Debug build is confused with (possibly invalid) op_begin(), if op_begin() == op_end(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210000 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/IR')
-rw-r--r--lib/IR/Instruction.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/IR/Instruction.cpp b/lib/IR/Instruction.cpp
index 28cc4cb9f1..6becc1e43e 100644
--- a/lib/IR/Instruction.cpp
+++ b/lib/IR/Instruction.cpp
@@ -331,6 +331,10 @@ bool Instruction::isIdenticalToWhenDefined(const Instruction *I) const {
getType() != I->getType())
return false;
+ // If both instructions have no operands, they are identical.
+ if (getNumOperands() == 0 && I->getNumOperands() == 0)
+ return haveSameSpecialState(this, I);
+
// We have two instructions of identical opcode and #operands. Check to see
// if all operands are the same.
if (!std::equal(op_begin(), op_end(), I->op_begin()))