[ARM] Add subtarget features for ARMv8.2-A
This adds subtarget features for ARMv8.2-A, which builds on (and
requires the features from) ARMv8.1-A. Most assembler-visible features
of ARMv8.2-A are system instructions, and are all required parts of the
architecture, so just depend on the HasV8_2aOps subtarget feature.
There is also one large, optional feature, which adds 16-bit floating
point versions of all existing floating-point instructions (VFP and
SIMD), this is represented by the FeatureFullFP16 subtarget feature.
Differential Revision: http://reviews.llvm.org/D15036
llvm-svn: 254399
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index c194149..3addd41 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -77,6 +77,7 @@
bool HasV7Ops;
bool HasV8Ops;
bool HasV8_1aOps;
+ bool HasV8_2aOps;
/// HasVFPv2, HasVFPv3, HasVFPv4, HasFPARMv8, HasNEON - Specify what
/// floating point ISAs are supported.
@@ -130,10 +131,12 @@
/// Thumb.
bool SupportsTailCall;
- /// HasFP16 - True if subtarget supports half-precision FP (We support VFP+HF
- /// only so far)
+ /// HasFP16 - True if subtarget supports half-precision FP conversions
bool HasFP16;
+ /// HasFullFP16 - True if subtarget supports half-precision FP operations
+ bool HasFullFP16;
+
/// HasD16 - True if subtarget is limited to 16 double precision
/// FP registers for VFPv3.
bool HasD16;
@@ -309,6 +312,7 @@
bool hasV7Ops() const { return HasV7Ops; }
bool hasV8Ops() const { return HasV8Ops; }
bool hasV8_1aOps() const { return HasV8_1aOps; }
+ bool hasV8_2aOps() const { return HasV8_2aOps; }
bool isCortexA5() const { return ARMProcFamily == CortexA5; }
bool isCortexA7() const { return ARMProcFamily == CortexA7; }
@@ -362,6 +366,7 @@
bool hasFP16() const { return HasFP16; }
bool hasD16() const { return HasD16; }
+ bool hasFullFP16() const { return HasFullFP16; }
const Triple &getTargetTriple() const { return TargetTriple; }