Port memory barriers intrinsics to AArch64
Memory barrier __builtin_arm_[dmb, dsb, isb] intrinsics are required to
implement their corresponding ACLE and MSVC intrinsics.
This patch ports ARM dmb, dsb, isb intrinsic to AArch64.
Requires LLVM r213247.
Differential Revision: http://reviews.llvm.org/D4521
llvm-svn: 213250
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 976f3a6..7a23797 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -645,7 +645,18 @@
if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall))
return true;
- return false;
+ // For intrinsics which take an immediate value as part of the instruction,
+ // range check them here.
+ unsigned i = 0, l = 0, u = 0;
+ switch (BuiltinID) {
+ default: return false;
+ case AArch64::BI__builtin_arm_dmb:
+ case AArch64::BI__builtin_arm_dsb:
+ case AArch64::BI__builtin_arm_isb: l = 0; u = 15; break;
+ }
+
+ // FIXME: VFP Intrinsics should error if VFP not present.
+ return SemaBuiltinConstantArgRange(TheCall, i, l, u + l);
}
bool Sema::CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {