ARM: decide whether to use movw/movt based on "minsize" attribute.
llvm-svn: 196102
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index ca5ba85..d6e8c81 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -64,6 +64,10 @@
bool HasFPARMv8;
bool HasNEON;
+ /// MinSize - True if the function being compiled has the "minsize" attribute
+ /// and should be optimised for size at the expense of speed.
+ bool MinSize;
+
/// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been
/// specified. Use the method useNEONForSinglePrecisionFP() to
/// determine if NEON should actually be used.
@@ -270,6 +274,7 @@
bool hasCrypto() const { return HasCrypto; }
bool hasCRC() const { return HasCRC; }
bool hasVirtualization() const { return HasVirtualization; }
+ bool isMinSize() const { return MinSize; }
bool useNEONForSinglePrecisionFP() const {
return hasNEON() && UseNEONForSinglePrecisionFP; }
@@ -327,7 +332,7 @@
bool isR9Reserved() const { return IsR9Reserved; }
- bool useMovt() const { return UseMovt && hasV6T2Ops(); }
+ bool useMovt() const { return UseMovt && !isMinSize(); }
bool supportsTailCall() const { return SupportsTailCall; }
bool allowsUnalignedMem() const { return AllowsUnalignedMem; }