Vendor import of clang release_38 branch r261684:
https://llvm.org/svn/llvm-project/cfe/branches/release_38@261684
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/vendor/clang/dist/; revision=296005 svn path=/vendor/clang/clang-release_38-r261684/; revision=296006; tag=vendor/clang/clang-release_38-r261684
@ -179,6 +179,33 @@ Several additional features/bugfixes have been added to the previous standards:
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- Improved diagnostics for function pointers.
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OpenMP Support in Clang
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---------------------
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OpenMP 3.1 is fully supported and is enabled by default with -fopenmp
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which now uses the clang OpenMP library instead of the GCC OpenMP library.
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The runtime can be built in-tree.
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In addition to OpenMP 3.1, several important elements of the OpenMP 4.0/4.5
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are supported as well. We continue to aim to complete OpenMP 4.5
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- ``map`` clause
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- task dependencies
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- ``num_teams`` clause
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- ``thread_limit`` clause
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- ``target`` and ``target data`` directive
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- ``target`` directive with implicit data mapping
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- ``target enter data`` and ``target exit data`` directive
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- Array sections [2.4, Array Sections].
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- Directive name modifiers for ``if`` clause [2.12, if Clause].
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- ``linear`` clause can be used in loop-based directives [2.7.2, loop Construct].
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- ``simdlen`` clause [2.8, SIMD Construct].
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- ``hint`` clause [2.13.2, critical Construct].
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- Parsing/semantic analysis of all non-device directives introduced in OpenMP 4.5.
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The codegen for OpenMP constructs was significantly improved allowing us to produce much more stable and fast code.
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Full test cases of IR are also implemented.
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CUDA Support in Clang
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---------------------
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Clang has experimental support for end-to-end CUDA compilation now:
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@ -3475,6 +3475,7 @@ class PPC32TargetCodeGenInfo : public TargetCodeGenInfo {
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Address PPC32_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAList,
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QualType Ty) const {
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const unsigned OverflowLimit = 8;
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if (const ComplexType *CTy = Ty->getAs<ComplexType>()) {
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// TODO: Implement this. For now ignore.
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(void)CTy;
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@ -3517,7 +3518,7 @@ Address PPC32_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAList,
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}
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llvm::Value *CC =
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Builder.CreateICmpULT(NumRegs, Builder.getInt8(8), "cond");
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Builder.CreateICmpULT(NumRegs, Builder.getInt8(OverflowLimit), "cond");
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llvm::BasicBlock *UsingRegs = CGF.createBasicBlock("using_regs");
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llvm::BasicBlock *UsingOverflow = CGF.createBasicBlock("using_overflow");
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@ -3569,6 +3570,8 @@ Address PPC32_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAList,
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{
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CGF.EmitBlock(UsingOverflow);
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Builder.CreateStore(Builder.getInt8(OverflowLimit), NumRegsAddr);
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// Everything in the overflow area is rounded up to a size of at least 4.
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CharUnits OverflowAreaAlign = CharUnits::fromQuantity(4);
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@ -1365,10 +1365,13 @@ Sema::CreateGenericSelectionExpr(SourceLocation KeyLoc,
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// Decay and strip qualifiers for the controlling expression type, and handle
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// placeholder type replacement. See committee discussion from WG14 DR423.
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ExprResult R = DefaultFunctionArrayLvalueConversion(ControllingExpr);
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if (R.isInvalid())
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return ExprError();
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ControllingExpr = R.get();
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{
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EnterExpressionEvaluationContext Unevaluated(*this, Sema::Unevaluated);
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ExprResult R = DefaultFunctionArrayLvalueConversion(ControllingExpr);
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if (R.isInvalid())
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return ExprError();
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ControllingExpr = R.get();
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}
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// The controlling expression is an unevaluated operand, so side effects are
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// likely unintended.
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@ -37,6 +37,7 @@ void testva (int n, ...)
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// CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]]
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//
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// CHECK-PPC:[[USING_OVERFLOW]]
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// CHECK-PPC-NEXT: store i8 8, i8* [[GPRPTR]], align 4
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// CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3
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// CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4
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// CHECK-PPC-NEXT: %{{[0-9]+}} = ptrtoint i8* %argp.cur to i32
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@ -76,6 +77,7 @@ void testva (int n, ...)
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// CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]]
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//
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// CHECK-PPC:[[USING_OVERFLOW]]
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// CHECK-PPC-NEXT: store i8 8, i8* [[GPRPTR]], align 4
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// CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3
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// CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4
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// CHECK-PPC-NEXT: [[MEMADDR:%.+]] = bitcast i8* [[OVERFLOW_AREA]] to i32*
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@ -31,4 +31,8 @@ void foo(int n) {
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const int i = 12;
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int a9[_Generic(i, int: 1, default: 2) == 1 ? 1 : -1];
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// This is expected to not trigger any diagnostics because the controlling
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// expression is not evaluated.
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(void)_Generic(*(int *)0, int: 1);
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}
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