[PATCH] D109780: [PowerPC] Add range check for vec_genpcvm builtins

[Quinn Pham via Phabricator via cfe-commits]

quinnp created this revision.
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This patch adds range checking for some Power10 altivec builtins. Range
checking is done in SemaChecking.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D109780

Files:
  clang/lib/Sema/SemaChecking.cpp
  clang/test/CodeGen/builtins-ppc-p10vector-error.c


Index: clang/test/CodeGen/builtins-ppc-p10vector-error.c
===================================================================
--- clang/test/CodeGen/builtins-ppc-p10vector-error.c
+++ clang/test/CodeGen/builtins-ppc-p10vector-error.c
@@ -30,3 +30,19 @@
 unsigned long long test_vec_cntm_ull(void) {
   return vec_cntm(vulla, 2); // expected-error 1+  {{argument value 2 is outside the valid range [0, 1]}}
 }
+
+vector unsigned char test_xxgenpcvbm(void) {
+  return vec_genpcvm(vuca, -1); // expected-error 1+ {{argument value -1 is outside the valid range [0, 3]}}
+}
+
+vector unsigned short test_xxgenpcvhm(void) {
+  return vec_genpcvm(vusa, -1); // expected-error 1+ {{argument value -1 is outside the valid range [0, 3]}}
+}
+
+vector unsigned int test_xxgenpcvwm(void) {
+  return vec_genpcvm(vuia, 4); // expected-error 1+ {{argument value 4 is outside the valid range [0, 3]}}
+}
+
+vector unsigned long long test_xxgenpcvdm(void) {
+  return vec_genpcvm(vulla, 4); // expected-error 1+ {{argument value 4 is outside the valid range [0, 3]}}
+}
Index: clang/lib/Sema/SemaChecking.cpp
===================================================================
--- clang/lib/Sema/SemaChecking.cpp
+++ clang/lib/Sema/SemaChecking.cpp
@@ -3478,6 +3478,11 @@
   case PPC::BI__builtin_altivec_vcntmbw:
   case PPC::BI__builtin_altivec_vcntmbd:
     return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1);
+  case PPC::BI__builtin_vsx_xxgenpcvbm:
+  case PPC::BI__builtin_vsx_xxgenpcvhm:
+  case PPC::BI__builtin_vsx_xxgenpcvwm:
+  case PPC::BI__builtin_vsx_xxgenpcvdm:
+    return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3);
 #define CUSTOM_BUILTIN(Name, Intr, Types, Acc) \
   case PPC::BI__builtin_##Name: \
     return SemaBuiltinPPCMMACall(TheCall, Types);


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