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ARM: Prefetch intrinsics 

llvm-svn: 215568
This commit is contained in:
Yi Kong 2014-08-13 19:18:14 +00:00
parent bb415eac2e
commit 26d104a9ec
5 changed files with 36 additions and 0 deletions
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3
clang/include/clang/Basic/BuiltinsARM.def
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@ -80,6 +80,9 @@ BUILTIN(__builtin_arm_dmb, "vUi", "nc")
BUILTIN(__builtin_arm_dsb, "vUi", "nc")
BUILTIN(__builtin_arm_isb, "vUi", "nc")
// Prefetch
BUILTIN(__builtin_arm_prefetch, "vvC*UiUi", "nc")
// MSVC
LANGBUILTIN(__yield, "v", "", ALL_MS_LANGUAGES)
LANGBUILTIN(__wfe, "v", "", ALL_MS_LANGUAGES)

12
clang/lib/CodeGen/CGBuiltin.cpp
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@ -3088,6 +3088,18 @@ Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
return Builder.CreateCall(F, llvm::ConstantInt::get(Int32Ty, HintID));
}
if (BuiltinID == ARM::BI__builtin_arm_prefetch) {
Value *Address = EmitScalarExpr(E->getArg(0));
Value *RW = EmitScalarExpr(E->getArg(1));
Value *IsData = EmitScalarExpr(E->getArg(2));
// Locality is not supported on ARM target
Value *Locality = llvm::ConstantInt::get(Int32Ty, 3);
Value *F = CGM.getIntrinsic(Intrinsic::prefetch);
return Builder.CreateCall4(F, Address, RW, Locality, IsData);
}
if (BuiltinID == ARM::BI__builtin_arm_rbit) {
return Builder.CreateCall(CGM.getIntrinsic(Intrinsic::arm_rbit),
EmitScalarExpr(E->getArg(0)),

5
clang/lib/Sema/SemaChecking.cpp
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@ -624,6 +624,11 @@ bool Sema::CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64);
}
if (BuiltinID == ARM::BI__builtin_arm_prefetch) {
return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) ||
SemaBuiltinConstantArgRange(TheCall, 2, 0, 1);
}
if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall))
return true;

11
clang/test/CodeGen/builtins-arm.c
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@ -66,3 +66,14 @@ void test_barrier() {
unsigned rbit(unsigned a) {
return __builtin_arm_rbit(a);
}
void prefetch(int i) {
__builtin_arm_prefetch(&i, 0, 1);
// CHECK: call {{.*}} @llvm.prefetch(i8* %0, i32 0, i32 3, i32 1)
__builtin_arm_prefetch(&i, 1, 1);
// CHECK: call {{.*}} @llvm.prefetch(i8* %0, i32 1, i32 3, i32 1)
__builtin_arm_prefetch(&i, 1, 0);
// CHECK: call {{.*}} @llvm.prefetch(i8* %0, i32 1, i32 3, i32 0)
}

5
clang/test/Sema/builtins-arm.c
View File

@ -37,4 +37,9 @@ void test3() {
__builtin_arm_isb(18); // expected-error {{argument should be a value from 0 to 15}}
}
void test4() {
__builtin_arm_prefetch(0, 2, 0); // expected-error {{argument should be a value from 0 to 1}}
__builtin_arm_prefetch(0, 0, 2); // expected-error {{argument should be a value from 0 to 1}}
}
#endif