From: Craig Topper <craig.topper@gmail.com>
Date: Thu, 21 Jul 2016 07:38:43 +0000 (+0000)
Subject: [Sema,X86] Add explicit check to ensure that builtins that require x86-64 target... 
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fe22d59a8424dd63184fa834f5915f9fdf2ec4ec;p=platform%2Fupstream%2Fllvm.git

[Sema,X86] Add explicit check to ensure that builtins that require x86-64 target throw an error if used on 32-bit target.

If these builtins are allowed to go through on a 32-bit target they will fire assertions in the backend.

Fixes PR28635.

llvm-svn: 276250
---

diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 6a4f65a..8ae0cbe 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -1597,6 +1597,56 @@ bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
     return SemaBuiltinCpuSupports(*this, TheCall);
   case X86::BI__builtin_ms_va_start:
     return SemaBuiltinMSVAStart(TheCall);
+  case X86::BI__builtin_ia32_addcarryx_u64:
+  case X86::BI__builtin_ia32_addcarry_u64:
+  case X86::BI__builtin_ia32_subborrow_u64:
+  case X86::BI__builtin_ia32_readeflags_u64:
+  case X86::BI__builtin_ia32_writeeflags_u64:
+  case X86::BI__builtin_ia32_bextr_u64:
+  case X86::BI__builtin_ia32_bextri_u64:
+  case X86::BI__builtin_ia32_bzhi_di:
+  case X86::BI__builtin_ia32_pdep_di:
+  case X86::BI__builtin_ia32_pext_di:
+  case X86::BI__builtin_ia32_crc32di:
+  case X86::BI__builtin_ia32_fxsave64:
+  case X86::BI__builtin_ia32_fxrstor64:
+  case X86::BI__builtin_ia32_xsave64:
+  case X86::BI__builtin_ia32_xrstor64:
+  case X86::BI__builtin_ia32_xsaveopt64:
+  case X86::BI__builtin_ia32_xrstors64:
+  case X86::BI__builtin_ia32_xsavec64:
+  case X86::BI__builtin_ia32_xsaves64:
+  case X86::BI__builtin_ia32_rdfsbase64:
+  case X86::BI__builtin_ia32_rdgsbase64:
+  case X86::BI__builtin_ia32_wrfsbase64:
+  case X86::BI__builtin_ia32_wrgsbase64:
+  case X86::BI__builtin_ia32_pbroadcastb512_gpr_mask:
+  case X86::BI__builtin_ia32_pbroadcastb256_gpr_mask:
+  case X86::BI__builtin_ia32_pbroadcastb128_gpr_mask:
+  case X86::BI__builtin_ia32_vcvtsd2si64:
+  case X86::BI__builtin_ia32_vcvtsd2usi64:
+  case X86::BI__builtin_ia32_vcvtss2si64:
+  case X86::BI__builtin_ia32_vcvtss2usi64:
+  case X86::BI__builtin_ia32_vcvttsd2si64:
+  case X86::BI__builtin_ia32_vcvttsd2usi64:
+  case X86::BI__builtin_ia32_vcvttss2si64:
+  case X86::BI__builtin_ia32_vcvttss2usi64:
+  case X86::BI__builtin_ia32_cvtss2si64:
+  case X86::BI__builtin_ia32_cvttss2si64:
+  case X86::BI__builtin_ia32_cvtsd2si64:
+  case X86::BI__builtin_ia32_cvttsd2si64:
+  case X86::BI__builtin_ia32_cvtsi2sd64:
+  case X86::BI__builtin_ia32_cvtsi2ss64:
+  case X86::BI__builtin_ia32_cvtusi2sd64:
+  case X86::BI__builtin_ia32_cvtusi2ss64:
+  case X86::BI__builtin_ia32_rdseed64_step: {
+    // These builtins only work on x86-64 targets.
+    const llvm::Triple &TT = Context.getTargetInfo().getTriple();
+    if (TT.getArch() != llvm::Triple::x86_64)
+      return Diag(TheCall->getCallee()->getLocStart(),
+                  diag::err_x86_builtin_32_bit_tgt);
+    return false;
+  }
   case X86::BI__builtin_ia32_extractf64x4_mask:
   case X86::BI__builtin_ia32_extracti64x4_mask:
   case X86::BI__builtin_ia32_extractf32x8_mask:
diff --git a/clang/test/CodeGen/builtins-x86-disabled.c b/clang/test/CodeGen/builtins-x86-disabled.c
new file mode 100644
index 0000000..a024336
--- /dev/null
+++ b/clang/test/CodeGen/builtins-x86-disabled.c
@@ -0,0 +1,22 @@
+// REQUIRES: x86-registered-target
+// RUN: not %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - 2>&1 | FileCheck %s
+
+void call_x86_64_builtins(void)
+{
+  unsigned long long a = __builtin_ia32_crc32di(0, 0);
+  unsigned long long b;
+  unsigned int c = __builtin_ia32_rdseed64_step (&b);
+  unsigned long long d = __builtin_ia32_bextr_u64 (0, 0);
+  unsigned long long e = __builtin_ia32_pdep_di(0, 0);
+  unsigned long long f = __builtin_ia32_pext_di(0, 0);
+  unsigned long long g = __builtin_ia32_bzhi_di(0, 0);
+  unsigned long long h;
+  unsigned long long i = __builtin_ia32_addcarryx_u64(0, 0, 0, &h);
+  unsigned long long j;
+  unsigned long long k = __builtin_ia32_addcarry_u64(0, 0, 0, &j);
+  unsigned long long l;
+  unsigned long long m = __builtin_ia32_subborrow_u64(0, 0, 0, &l);
+}
+
+// CHECK: error: this builtin is only available on x86-64 targets
+// CHECK: __builtin_ia32_crc32di