From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Wed, 8 May 2019 10:39:56 +0000 (+0000)
Subject: R600InstrInfo.cpp - Add getTransSwizzle assert for the swizzle op index. NFCI.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=507eb79ef0a660919801681ad8481bd4fc136567;p=llvm

R600InstrInfo.cpp - Add getTransSwizzle assert for the swizzle op index. NFCI.

Fixes static analyzer undefined value warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@360239 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/AMDGPU/R600InstrInfo.cpp b/lib/Target/AMDGPU/R600InstrInfo.cpp
index bc21d912db1..d9e839fe203 100644
--- a/lib/Target/AMDGPU/R600InstrInfo.cpp
+++ b/lib/Target/AMDGPU/R600InstrInfo.cpp
@@ -401,6 +401,7 @@ Swizzle(std::vector<std::pair<int, unsigned>> Src,
 }
 
 static unsigned getTransSwizzle(R600InstrInfo::BankSwizzle Swz, unsigned Op) {
+  assert(Op < 3 && "Out of range swizzle index");
   switch (Swz) {
   case R600InstrInfo::ALU_VEC_012_SCL_210: {
     unsigned Cycles[3] = { 2, 1, 0};