diff options
Diffstat (limited to 'clang/lib')
| -rw-r--r-- | clang/lib/Sema/SemaChecking.cpp | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp index b34a1c146fc..9858244d569 100644 --- a/clang/lib/Sema/SemaChecking.cpp +++ b/clang/lib/Sema/SemaChecking.cpp @@ -1986,6 +1986,109 @@ bool Sema::CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall) { << Arg->getSourceRange(); } +// Check if the gather/scatter scale is legal. +bool Sema::CheckX86BuiltinGatherScatterScale(unsigned BuiltinID, + CallExpr *TheCall) { + unsigned ArgNum = 0; + switch (BuiltinID) { + default: + return false; + case X86::BI__builtin_ia32_gatherpfdpd: + case X86::BI__builtin_ia32_gatherpfdps: + case X86::BI__builtin_ia32_gatherpfqpd: + case X86::BI__builtin_ia32_gatherpfqps: + case X86::BI__builtin_ia32_scatterpfdpd: + case X86::BI__builtin_ia32_scatterpfdps: + case X86::BI__builtin_ia32_scatterpfqpd: + case X86::BI__builtin_ia32_scatterpfqps: + ArgNum = 3; + break; + case X86::BI__builtin_ia32_gatherd_pd: + case X86::BI__builtin_ia32_gatherd_pd256: + case X86::BI__builtin_ia32_gatherq_pd: + case X86::BI__builtin_ia32_gatherq_pd256: + case X86::BI__builtin_ia32_gatherd_ps: + case X86::BI__builtin_ia32_gatherd_ps256: + case X86::BI__builtin_ia32_gatherq_ps: + case X86::BI__builtin_ia32_gatherq_ps256: + case X86::BI__builtin_ia32_gatherd_q: + case X86::BI__builtin_ia32_gatherd_q256: + case X86::BI__builtin_ia32_gatherq_q: + case X86::BI__builtin_ia32_gatherq_q256: + case X86::BI__builtin_ia32_gatherd_d: + case X86::BI__builtin_ia32_gatherd_d256: + case X86::BI__builtin_ia32_gatherq_d: + case X86::BI__builtin_ia32_gatherq_d256: + case X86::BI__builtin_ia32_gather3div2df: + case X86::BI__builtin_ia32_gather3div2di: + case X86::BI__builtin_ia32_gather3div4df: + case X86::BI__builtin_ia32_gather3div4di: + case X86::BI__builtin_ia32_gather3div4sf: + case X86::BI__builtin_ia32_gather3div4si: + case X86::BI__builtin_ia32_gather3div8sf: + case X86::BI__builtin_ia32_gather3div8si: + case X86::BI__builtin_ia32_gather3siv2df: + case X86::BI__builtin_ia32_gather3siv2di: + case X86::BI__builtin_ia32_gather3siv4df: + case X86::BI__builtin_ia32_gather3siv4di: + case X86::BI__builtin_ia32_gather3siv4sf: + case X86::BI__builtin_ia32_gather3siv4si: + case X86::BI__builtin_ia32_gather3siv8sf: + case X86::BI__builtin_ia32_gather3siv8si: + case X86::BI__builtin_ia32_gathersiv8df: + case X86::BI__builtin_ia32_gathersiv16sf: + case X86::BI__builtin_ia32_gatherdiv8df: + case X86::BI__builtin_ia32_gatherdiv16sf: + case X86::BI__builtin_ia32_gathersiv8di: + case X86::BI__builtin_ia32_gathersiv16si: + case X86::BI__builtin_ia32_gatherdiv8di: + case X86::BI__builtin_ia32_gatherdiv16si: + case X86::BI__builtin_ia32_scatterdiv2df: + case X86::BI__builtin_ia32_scatterdiv2di: + case X86::BI__builtin_ia32_scatterdiv4df: + case X86::BI__builtin_ia32_scatterdiv4di: + case X86::BI__builtin_ia32_scatterdiv4sf: + case X86::BI__builtin_ia32_scatterdiv4si: + case X86::BI__builtin_ia32_scatterdiv8sf: + case X86::BI__builtin_ia32_scatterdiv8si: + case X86::BI__builtin_ia32_scattersiv2df: + case X86::BI__builtin_ia32_scattersiv2di: + case X86::BI__builtin_ia32_scattersiv4df: + case X86::BI__builtin_ia32_scattersiv4di: + case X86::BI__builtin_ia32_scattersiv4sf: + case X86::BI__builtin_ia32_scattersiv4si: + case X86::BI__builtin_ia32_scattersiv8sf: + case X86::BI__builtin_ia32_scattersiv8si: + case X86::BI__builtin_ia32_scattersiv8df: + case X86::BI__builtin_ia32_scattersiv16sf: + case X86::BI__builtin_ia32_scatterdiv8df: + case X86::BI__builtin_ia32_scatterdiv16sf: + case X86::BI__builtin_ia32_scattersiv8di: + case X86::BI__builtin_ia32_scattersiv16si: + case X86::BI__builtin_ia32_scatterdiv8di: + case X86::BI__builtin_ia32_scatterdiv16si: + ArgNum = 4; + break; + } + + llvm::APSInt Result; + + // We can't check the value of a dependent argument. + Expr *Arg = TheCall->getArg(ArgNum); + if (Arg->isTypeDependent() || Arg->isValueDependent()) + return false; + + // Check constant-ness first. + if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) + return true; + + if (Result == 1 || Result == 2 || Result == 4 || Result == 8) + return false; + + return Diag(TheCall->getLocStart(), diag::err_x86_builtin_invalid_scale) + << Arg->getSourceRange(); +} + bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (BuiltinID == X86::BI__builtin_cpu_supports) return SemaBuiltinCpuSupports(*this, TheCall); @@ -1997,6 +2100,10 @@ bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (CheckX86BuiltinRoundingOrSAE(BuiltinID, TheCall)) return true; + // If the intrinsic has a gather/scatter scale immediate make sure its valid. + if (CheckX86BuiltinGatherScatterScale(BuiltinID, TheCall)) + return true; + // For intrinsics which take an immediate value as part of the instruction, // range check them here. int i = 0, l = 0, u = 0; |
