Make ARM an X86 memcpy expansion more similar to each other.
Now both subtarget define getMaxInlineSizeThreshold and the expansion uses it.
This should not change generated code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43552 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 154832b..ef1c86d 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -1315,7 +1315,8 @@
// this once Thumb ldmia / stmia support is added.
unsigned Size = I->getValue();
if (AlwaysInline ||
- (!ST->isThumb() && Size < 64 && (Align & 3) == 0))
+ (!ST->isThumb() && Size <= Subtarget->getMaxInlineSizeThreshold() &&
+ (Align & 3) == 0))
return LowerMEMCPYInline(ChainOp, DestOp, SourceOp, Size, Align, DAG);
return LowerMEMCPYCall(ChainOp, DestOp, SourceOp, CountOp, DAG);
}
diff --git a/lib/Target/ARM/ARMSubtarget.h b/lib/Target/ARM/ARMSubtarget.h
index 62367ca..5b5ee39 100644
--- a/lib/Target/ARM/ARMSubtarget.h
+++ b/lib/Target/ARM/ARMSubtarget.h
@@ -62,6 +62,7 @@
///
ARMSubtarget(const Module &M, const std::string &FS, bool thumb);
+ unsigned getMaxInlineSizeThreshold() const { return 64; }
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);