[PATCH] D109335: [NFC][InstCombine] Make check for sret in a vararg function clearer

[Arthur Eubanks via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGb81fc14f2da1: [NFC][InstCombine] Make check for sret in a vararg function clearer (authored by aeubanks).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109335/new/

https://reviews.llvm.org/D109335

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp


Index: llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
===================================================================
--- llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -2884,7 +2884,7 @@
     // that are compatible with being a vararg call argument.
     unsigned SRetIdx;
     if (CallerPAL.hasAttrSomewhere(Attribute::StructRet, &SRetIdx) &&
-        SRetIdx > FT->getNumParams())
+        SRetIdx - AttributeList::FirstArgIndex >= FT->getNumParams())
       return false;
   }
 


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