[PATCH] D110282: [PowerPC] SemaChecking for darn family of builtins

[Albion Fung via Phabricator via llvm-commits]

Conanap created this revision.
Conanap added reviewers: PowerPC, nemanjai, saghir, stefanp.
Conanap added projects: PowerPC, clang, LLVM.
Herald added a subscriber: kbarton.
Conanap requested review of this revision.

The `__darn` family of builtins are only available on Pwr9,
and only `__darn_32` is available on 32 bit, while the rest
are only available on 64 bit. The patch adds sema checking
for these builtins and separate the `__darn_32`'s 32 bit
test cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D110282

Files:
  clang/lib/Sema/SemaChecking.cpp
  clang/test/CodeGen/builtins-ppc-xlcompat-darn-32.c
  clang/test/CodeGen/builtins-ppc-xlcompat-darn.c
  clang/test/CodeGen/builtins-ppc.c


Index: clang/test/CodeGen/builtins-ppc.c
===================================================================
--- clang/test/CodeGen/builtins-ppc.c
+++ clang/test/CodeGen/builtins-ppc.c
@@ -36,16 +36,3 @@
   // CHECK: call double @llvm.ppc.setflm(double %1)
   res = __builtin_setflm(res);
 }
-
-void test_builtin_ppc_darn() {
-  volatile long res;
-  volatile int x;
-  // CHECK: call i64 @llvm.ppc.darn()
-  res = __builtin_darn();
-
-  // CHECK: call i64 @llvm.ppc.darnraw()
-  res = __builtin_darn_raw();
-
-  // CHECK: call i32 @llvm.ppc.darn32()
-  x = __builtin_darn_32();
-}
Index: clang/test/CodeGen/builtins-ppc-xlcompat-darn.c
===================================================================
--- clang/test/CodeGen/builtins-ppc-xlcompat-darn.c
+++ clang/test/CodeGen/builtins-ppc-xlcompat-darn.c
@@ -5,12 +5,6 @@
 // RUN:   -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
 // RUN: %clang_cc1 -triple powerpc64-unknown-aix \
 // RUN:    -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
-// RUN: %clang_cc1 -triple powerpc-unknown-unknown \
-// RUN:    -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
-// RUN: %clang_cc1 -triple powerpcle-unknown-unknown \
-// RUN:   -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
-// RUN: %clang_cc1 -triple powerpc-unknown-aix \
-// RUN:    -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
 
 // The darn class of builtins are Power 9 and up and only darn_32 works in
 // 32 bit mode.
@@ -30,11 +24,3 @@
 long long testdarn_raw(void) {
   return __darn_raw();
 }
-
-// CHECK-LABEL: @testdarn_32(
-// CHECK:         [[TMP0:%.*]] = call i32 @llvm.ppc.darn32()
-// CHECK-NEXT:    ret i32 [[TMP0]]
-//
-int testdarn_32(void) {
-  return __darn_32();
-}
Index: clang/test/CodeGen/builtins-ppc-xlcompat-darn-32.c
===================================================================
--- /dev/null
+++ clang/test/CodeGen/builtins-ppc-xlcompat-darn-32.c
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -triple powerpc-unknown-unknown \
+// RUN:    -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpcle-unknown-unknown \
+// RUN:   -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc-unknown-aix \
+// RUN:    -emit-llvm %s -o -  -target-cpu pwr9 | FileCheck %s
+
+// CHECK-LABEL: @testdarn_32(
+// CHECK:         [[TMP0:%.*]] = call i32 @llvm.ppc.darn32()
+// CHECK-NEXT:    ret i32 [[TMP0]]
+//
+int testdarn_32(void) {
+  return __darn_32();
+}
Index: clang/lib/Sema/SemaChecking.cpp
===================================================================
--- clang/lib/Sema/SemaChecking.cpp
+++ clang/lib/Sema/SemaChecking.cpp
@@ -3295,6 +3295,8 @@
   case PPC::BI__builtin_ppc_insert_exp:
   case PPC::BI__builtin_ppc_extract_sig:
   case PPC::BI__builtin_ppc_addex:
+  case PPC::BI__builtin_darn:
+  case PPC::BI__builtin_darn_raw:
     return true;
   }
   return false;
@@ -3473,6 +3475,11 @@
     return SemaFeatureCheck(*this, TheCall, "isa-v207-instructions",
                             diag::err_ppc_builtin_only_on_arch, "8") ||
            SemaBuiltinConstantArgRange(TheCall, 1, 1, 16);
+  case PPC::BI__builtin_darn:
+  case PPC::BI__builtin_darn_raw:
+  case PPC::BI__builtin_darn_32:
+    return SemaFeatureCheck(*this, TheCall, "isa-v30-instructions",
+                            diag::err_ppc_builtin_only_on_arch, "9");
 #define CUSTOM_BUILTIN(Name, Intr, Types, Acc) \
   case PPC::BI__builtin_##Name: \
     return SemaBuiltinPPCMMACall(TheCall, Types);


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