commit 547a83b4ebd1cbbe90b092634bf1d909ded48555
author Matt Arsenault <Matthew.Arsenault@amd.com> Wed Jan 30 23:09:28 2019 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> Wed Jan 30 23:09:28 2019 +0000
tree cd7c41cef8fc587a95986659b0f2cd684767eb4e
parent 10f59405ae50568308b713d9dd20eb30625470bd

MIR: Reject non-power-of-4 alignments in MMO parsing

llvm-svn: 352686

llvm/lib/CodeGen/MIRParser/MIParser.cpp

diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index c5fecfb..c5db9cc 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -2324,6 +2324,10 @@
   if (getUnsigned(Alignment))
     return true;
   lex();
+
+  if (!isPowerOf2_32(Alignment))
+    return error("expected a power-of-2 literal after 'align'");
+
   return false;
 }