[llvm] 0a58ef5 - [Hexagon] Require PS_aligna whenever variable-sized objects are present

[Krzysztof Parzyszek via llvm-commits]

Author: Krzysztof Parzyszek
Date: 2019-11-12T09:43:21-06:00
New Revision: 0a58ef5eb5e1a243756f649f82834281ac3dd7ff

URL: https://github.com/llvm/llvm-project/commit/0a58ef5eb5e1a243756f649f82834281ac3dd7ff
DIFF: https://github.com/llvm/llvm-project/commit/0a58ef5eb5e1a243756f649f82834281ac3dd7ff.diff

LOG: [Hexagon] Require PS_aligna whenever variable-sized objects are present

Added: 
    

Modified: 
    llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp b/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
index dc114d077361..1d3d2ea8c557 100644
--- a/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
@@ -2388,9 +2388,9 @@ bool HexagonFrameLowering::needsAligna(const MachineFunction &MF) const {
   const MachineFrameInfo &MFI = MF.getFrameInfo();
   if (!MFI.hasVarSizedObjects())
     return false;
-  unsigned MaxA = MFI.getMaxAlignment();
-  if (MaxA <= getStackAlignment())
-    return false;
+  // Do not check for max stack object alignment here, because the stack
+  // may not be complete yet. Assume that we will need PS_aligna if there
+  // are variable-sized objects.
   return true;
 }