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[clang][bytecode] Implement __builtin_arithmetic_fence (#113937)

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Timm Baeder 2024-10-29 00:56:03 +01:00 committed by GitHub
parent 7c554265ce
commit b46a0482f9
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2 changed files with 19 additions and 0 deletions
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14
clang/lib/AST/ByteCode/InterpBuiltin.cpp
View File

@ -1670,6 +1670,15 @@ static bool interp__builtin_operator_delete(InterpState &S, CodePtr OpPC,
S, OpPC, *AllocForm, DynamicAllocator::Form::Operator, BlockDesc, Source);
}
static bool interp__builtin_arithmetic_fence(InterpState &S, CodePtr OpPC,
const InterpFrame *Frame,
const Function *Func,
const CallExpr *Call) {
const Floating &Arg0 = S.Stk.peek<Floating>();
S.Stk.push<Floating>(Arg0);
return true;
}
bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F,
const CallExpr *Call, uint32_t BuiltinID) {
const InterpFrame *Frame = S.Current;
@ -2111,6 +2120,11 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const Function *F,
return false;
break;
case Builtin::BI__arithmetic_fence:
if (!interp__builtin_arithmetic_fence(S, OpPC, Frame, F, Call))
return false;
break;
default:
S.FFDiag(S.Current->getLocation(OpPC),
diag::note_invalid_subexpr_in_const_expr)

5
clang/test/Sema/arithmetic-fence-builtin.c
View File

@ -1,8 +1,13 @@
// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - -verify -x c++ %s
// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - -verify -x c++ %s -fexperimental-new-constant-interpreter
// RUN: %clang_cc1 -triple ppc64le -DPPC -emit-llvm -o - -verify -x c++ %s
// RUN: %clang_cc1 -triple ppc64le -DPPC -emit-llvm -o - -verify -x c++ %s -fexperimental-new-constant-interpreter
// RUN: not %clang_cc1 -triple ppc64le -DPPC -emit-llvm -o - -x c++ %s \
// RUN: -fprotect-parens 2>&1 | FileCheck -check-prefix=PPC %s
// RUN: not %clang_cc1 -triple ppc64le -DPPC -emit-llvm -o - -x c++ %s -fexperimental-new-constant-interpreter \
// RUN: -fprotect-parens 2>&1 | FileCheck -check-prefix=PPC %s
// RUN: %clang_cc1 -triple spir64 -emit-llvm -o - -verify -x c++ %s
// RUN: %clang_cc1 -triple spir64 -emit-llvm -o - -verify -x c++ %s -fexperimental-new-constant-interpreter
#ifndef PPC
int v;
template <typename T> T addT(T a, T b) {