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Remove the bare getSubtargetImpl call from the AArch64 port. As part 

of this add a test that shows we can generate code for functions
that specifically enable a subtarget feature.

llvm-svn: 232884
This commit is contained in:
Eric Christopher 2015-03-21 04:04:50 +00:00
parent 0a6ce26c38
commit faad620569
3 changed files with 37 additions and 6 deletions
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1
llvm/lib/Target/AArch64/AArch64TargetMachine.cpp
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@ -127,7 +127,6 @@ AArch64TargetMachine::AArch64TargetMachine(const Target &T, StringRef TT,
: LLVMTargetMachine(T, computeDataLayout(TT, LittleEndian), TT, CPU, FS, : LLVMTargetMachine(T, computeDataLayout(TT, LittleEndian), TT, CPU, FS,
Options, RM, CM, OL), Options, RM, CM, OL),
TLOF(createTLOF(Triple(getTargetTriple()))), TLOF(createTLOF(Triple(getTargetTriple()))),
Subtarget(TT, CPU, FS, *this, LittleEndian),
isLittle(LittleEndian) { isLittle(LittleEndian) {
initAsmInfo(); initAsmInfo();
} }

5
llvm/lib/Target/AArch64/AArch64TargetMachine.h
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@ -24,7 +24,6 @@ namespace llvm {
class AArch64TargetMachine : public LLVMTargetMachine { class AArch64TargetMachine : public LLVMTargetMachine {
protected: protected:
std::unique_ptr<TargetLoweringObjectFile> TLOF; std::unique_ptr<TargetLoweringObjectFile> TLOF;
AArch64Subtarget Subtarget;
mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap; mutable StringMap<std::unique_ptr<AArch64Subtarget>> SubtargetMap;
public: public:
@ -34,10 +33,6 @@ public:
CodeGenOpt::Level OL, bool IsLittleEndian); CodeGenOpt::Level OL, bool IsLittleEndian);
~AArch64TargetMachine() override; ~AArch64TargetMachine() override;
const AArch64Subtarget *getSubtargetImpl() const override {
return &Subtarget;
}
const AArch64Subtarget *getSubtargetImpl(const Function &F) const override; const AArch64Subtarget *getSubtargetImpl(const Function &F) const override;
// Pass Pipeline Configuration // Pass Pipeline Configuration

37
llvm/test/CodeGen/AArch64/function-subtarget-features.ll Normal file
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@ -0,0 +1,37 @@
; RUN: llc < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-gnu"
; This test verifies that we can enable subtarget features via
; the function attributes and generate appropriate code (or,
; in this case, select the instruction at all).
; Function Attrs: nounwind
define <16 x i8> @foo(<16 x i8> %data, <16 x i8> %key) #0 {
entry:
%__p0.addr.i = alloca <16 x i8>, align 16
%__p1.addr.i = alloca <16 x i8>, align 16
%__ret.i = alloca <16 x i8>, align 16
%data.addr = alloca <16 x i8>, align 16
%key.addr = alloca <16 x i8>, align 16
store <16 x i8> %data, <16 x i8>* %data.addr, align 16
store <16 x i8> %key, <16 x i8>* %key.addr, align 16
%0 = load <16 x i8>, <16 x i8>* %data.addr, align 16
%1 = load <16 x i8>, <16 x i8>* %key.addr, align 16
store <16 x i8> %0, <16 x i8>* %__p0.addr.i, align 16
store <16 x i8> %1, <16 x i8>* %__p1.addr.i, align 16
%2 = load <16 x i8>, <16 x i8>* %__p0.addr.i, align 16
%3 = load <16 x i8>, <16 x i8>* %__p1.addr.i, align 16
%vaeseq_v.i = call <16 x i8> @llvm.aarch64.crypto.aese(<16 x i8> %2, <16 x i8> %3)
store <16 x i8> %vaeseq_v.i, <16 x i8>* %__ret.i, align 16
%4 = load <16 x i8>, <16 x i8>* %__ret.i, align 16
ret <16 x i8> %4
}
; CHECK: foo
; CHECK: aese
; Function Attrs: nounwind readnone
declare <16 x i8> @llvm.aarch64.crypto.aese(<16 x i8>, <16 x i8>)
attributes #0 = { nounwind "target-features"="+neon,+crc,+crypto" }