[ARM] Add the option to directly access TLS pointer
This patch enables choice for accessing thread local
storage pointer (like '-mtp' in gcc).
Differential Revision: https://reviews.llvm.org/D34408
llvm-svn: 309381
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 400d185..c49ea13 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -331,6 +331,9 @@
/// If true, VFP/NEON VMLA/VMLS have special RAW hazards.
bool HasVMLxHazards = false;
+ // If true, read thread pointer from coprocessor register.
+ bool ReadTPHard = false;
+
/// If true, VMOVRS, VMOVSR and VMOVS will be converted from VFP to NEON.
bool UseNEONForFPMovs = false;
@@ -657,6 +660,7 @@
bool isMClass() const { return ARMProcClass == MClass; }
bool isRClass() const { return ARMProcClass == RClass; }
bool isAClass() const { return ARMProcClass == AClass; }
+ bool isReadTPHard() const { return ReadTPHard; }
bool isR9Reserved() const {
return isTargetMachO() ? (ReserveR9 || !HasV6Ops) : ReserveR9;