From: Nirav Dave <niravd@google.com>
Date: Thu, 24 Jan 2019 17:47:18 +0000 (+0000)
Subject: [InlineAsm] Don't calculate registers for inline asm memory operands. NFCI.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0cc297d24c0314719ec243122374e9221a693668;p=llvm

[InlineAsm] Don't calculate registers for inline asm memory operands. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352066 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index f22ca4b55c3..664cc3b9900 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -7345,6 +7345,10 @@ static void GetRegistersForValue(SelectionDAG &DAG, const SDLoc &DL,
   SmallVector<unsigned, 4> Regs;
   const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo();
 
+  // No work to do for memory operations.
+  if (OpInfo.ConstraintType == TargetLowering::C_Memory)
+    return;
+
   // If this is a constraint for a single physreg, or a constraint for a
   // register class, find it.
   unsigned AssignedReg;