[PATCH] D125688: [MCParser] Set default alignment value when meeting invalid align

[serge via Phabricator via llvm-commits]

serge-sans-paille created this revision.
serge-sans-paille added reviewers: aaron.ballman, nicolas17.
Herald added a subscriber: hiraditya.
Herald added a project: All.
serge-sans-paille requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Upon invalid alignment value, still set a default valid alignment value to avoid
hitting later asserts.

Fix #55273


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125688

Files:
  llvm/lib/MC/MCParser/AsmParser.cpp


Index: llvm/lib/MC/MCParser/AsmParser.cpp
===================================================================
--- llvm/lib/MC/MCParser/AsmParser.cpp
+++ llvm/lib/MC/MCParser/AsmParser.cpp
@@ -3451,10 +3451,14 @@
     // up to one.
     if (Alignment == 0)
       Alignment = 1;
-    if (!isPowerOf2_64(Alignment))
+    if (!isPowerOf2_64(Alignment)) {
       ReturnVal |= Error(AlignmentLoc, "alignment must be a power of 2");
-    if (!isUInt<32>(Alignment))
+      Alignment = PowerOf2Floor(Alignment);
+    }
+    if (!isUInt<32>(Alignment)) {
       ReturnVal |= Error(AlignmentLoc, "alignment must be smaller than 2**32");
+      Alignment = 1u << 31;
+    }
   }
 
   // Diagnose non-sensical max bytes to align.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D125688.429706.patch
Type: text/x-patch
Size: 719 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220516/26d3089f/attachment.bin>