[mlir] [clang] fix issue 73559. (PR #74926)
via cfe-commits
cfe-commits at lists.llvm.org
Sun Dec 17 00:59:26 PST 2023
Andrzej =?utf-8?q?Warzyński?= <andrzej.warzynski at arm.com>,ChipsSpectre
<maximilian.hornung at tum.de>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/74926 at github.com>
https://github.com/ChipsSpectre updated https://github.com/llvm/llvm-project/pull/74926
>From dad78484118bbd0a662915df0b4ce50c24d3bf42 Mon Sep 17 00:00:00 2001
From: ChipsSpectre <maximilian.hornung at tum.de>
Date: Sat, 9 Dec 2023 12:07:02 +0100
Subject: [PATCH 1/5] fix issue 73559.
---
clang/lib/Parse/ParseDecl.cpp | 3 ++-
clang/lib/Parse/ParseDeclCXX.cpp | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index ece3698967e2f6..5d1c19ae07cb54 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -3483,7 +3483,8 @@ void Parser::ParseDeclarationSpecifiers(
case tok::coloncolon: // ::foo::bar
// C++ scope specifier. Annotate and loop, or bail out on error.
- if (TryAnnotateCXXScopeToken(EnteringContext)) {
+ if (getLangOpts().CPlusPlus &&
+ TryAnnotateCXXScopeToken(EnteringContext)) {
if (!DS.hasTypeSpecifier())
DS.SetTypeSpecError();
goto DoneWithDeclSpec;
diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index 910112ecae964c..eba7ea65beee94 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -2702,7 +2702,7 @@ Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
bool MalformedTypeSpec = false;
if (!TemplateInfo.Kind &&
Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw___super)) {
- if (TryAnnotateCXXScopeToken())
+ if (getLangOpts().CPlusPlus && TryAnnotateCXXScopeToken())
MalformedTypeSpec = true;
bool isAccessDecl;
>From a1985517ddca97dd5779014690d80caaa31f8cb4 Mon Sep 17 00:00:00 2001
From: ChipsSpectre <maximilian.hornung at tum.de>
Date: Mon, 11 Dec 2023 22:31:10 +0100
Subject: [PATCH 2/5] address review comments.
---
clang/docs/ReleaseNotes.rst | 2 ++
clang/lib/Parse/ParseDeclCXX.cpp | 6 ++++--
clang/test/Parser/cxx-in-c.c | 1 +
3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 783dc7333af7e2..59f131ea79465f 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -641,6 +641,8 @@ Bug Fixes in This Version
Fixes (`#67317 <https://github.com/llvm/llvm-project/issues/67317>`_)
- Clang now properly diagnoses use of stand-alone OpenMP directives after a
label (including ``case`` or ``default`` labels).
+- Fix crash when using C++ only tokens like *::* in C compiler clang.
+ Fixes (`#73559 https://github.com/llvm/llvm-project/issues/73559`_)
Before:
diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index eba7ea65beee94..89a97cc96111d8 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -2678,7 +2678,9 @@ Parser::DeclGroupPtrTy
Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
ParsedAttributes &AccessAttrs,
const ParsedTemplateInfo &TemplateInfo,
- ParsingDeclRAIIObject *TemplateDiags) {
+ ParsingDeclRAIIObject *TemplateDiags) {
+ assert(getLangOpts().CPlusPlus &&
+ "Call sites of this function should be guarded by checking for C++");
if (Tok.is(tok::at)) {
if (getLangOpts().ObjC && NextToken().isObjCAtKeyword(tok::objc_defs))
Diag(Tok, diag::err_at_defs_cxx);
@@ -2702,7 +2704,7 @@ Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
bool MalformedTypeSpec = false;
if (!TemplateInfo.Kind &&
Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw___super)) {
- if (getLangOpts().CPlusPlus && TryAnnotateCXXScopeToken())
+ if (TryAnnotateCXXScopeToken())
MalformedTypeSpec = true;
bool isAccessDecl;
diff --git a/clang/test/Parser/cxx-in-c.c b/clang/test/Parser/cxx-in-c.c
index f5fa39bd0cb99b..bd304260571c4d 100644
--- a/clang/test/Parser/cxx-in-c.c
+++ b/clang/test/Parser/cxx-in-c.c
@@ -3,3 +3,4 @@
// PR9137
void f0(int x) : {}; // expected-error{{expected function body after function declarator}}
void f1(int x) try {}; // expected-error{{expected function body after function declarator}}
+::; // expected-error{{expected that double colon marker does not appear in c}}
>From d2de13285fdf460bd049ab7ec3bbdf5c595bb1ad Mon Sep 17 00:00:00 2001
From: ChipsSpectre <maximilian.hornung at tum.de>
Date: Mon, 11 Dec 2023 22:35:17 +0100
Subject: [PATCH 3/5] enforce coding style
---
clang/lib/Parse/ParseDeclCXX.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index 89a97cc96111d8..1cf16a752cfcdc 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -2678,9 +2678,9 @@ Parser::DeclGroupPtrTy
Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
ParsedAttributes &AccessAttrs,
const ParsedTemplateInfo &TemplateInfo,
- ParsingDeclRAIIObject *TemplateDiags) {
+ ParsingDeclRAIIObject *TemplateDiags) {
assert(getLangOpts().CPlusPlus &&
- "Call sites of this function should be guarded by checking for C++");
+ "Call sites of this function should be guarded by checking for C++");
if (Tok.is(tok::at)) {
if (getLangOpts().ObjC && NextToken().isObjCAtKeyword(tok::objc_defs))
Diag(Tok, diag::err_at_defs_cxx);
>From 2ef492222e7495c3b718f7975c40d9d27443a94e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andrzej=20Warzy=C5=84ski?= <andrzej.warzynski at arm.com>
Date: Mon, 11 Dec 2023 21:32:23 +0000
Subject: [PATCH 4/5] Revert "[mlir][vector] Make `TransposeOpLowering`
configurable (#73915)" (#75062)
Reverting a workaround intended specifically for SPRI-V. That workaround
emerged from this discussion:
* https://github.com/llvm/llvm-project/pull/72105
AFAIK, it hasn't been required in practice. This is based on IREE
(https://github.com/openxla/iree), which has just bumped it's fork of
LLVM without using it (*).
(*) https://github.com/openxla/iree/commit/cef31e775e03ec83420e4a7b47a992242d8df37c
This reverts commit bbd2b08b95fe76bea138c1b03c1cd42ed3ee04df.
---
.../Vector/Transforms/VectorTransforms.h | 10 ------
.../Transforms/LowerVectorTranspose.cpp | 34 +++++++++----------
2 files changed, 16 insertions(+), 28 deletions(-)
diff --git a/mlir/include/mlir/Dialect/Vector/Transforms/VectorTransforms.h b/mlir/include/mlir/Dialect/Vector/Transforms/VectorTransforms.h
index 41ffc929946027..08d3bb157a0e39 100644
--- a/mlir/include/mlir/Dialect/Vector/Transforms/VectorTransforms.h
+++ b/mlir/include/mlir/Dialect/Vector/Transforms/VectorTransforms.h
@@ -59,16 +59,6 @@ struct VectorTransformsOptions {
vectorTransferSplit = opt;
return *this;
}
-
- /// Option to control if vector.transpose can lower to a vector.shape_cast.
- /// TODO: ATM it's not possible to lower `vector.shape_cast` to SPIR-V
- /// and hence the need for this opt-out. Once the missing support has been
- /// added, this option can be removed.
- bool useShapeCast = true;
- VectorTransformsOptions &setUseShapeCast(bool opt = true) {
- useShapeCast = opt;
- return *this;
- }
};
//===----------------------------------------------------------------------===//
diff --git a/mlir/lib/Dialect/Vector/Transforms/LowerVectorTranspose.cpp b/mlir/lib/Dialect/Vector/Transforms/LowerVectorTranspose.cpp
index 4d43a76c4a4efc..97f6caca1b25cc 100644
--- a/mlir/lib/Dialect/Vector/Transforms/LowerVectorTranspose.cpp
+++ b/mlir/lib/Dialect/Vector/Transforms/LowerVectorTranspose.cpp
@@ -334,24 +334,22 @@ class TransposeOpLowering : public OpRewritePattern<vector::TransposeOp> {
return rewriter.notifyMatchFailure(
op, "Options specifies lowering to shuffle");
- if (vectorTransformOptions.useShapeCast) {
- // Replace:
- // vector.transpose %0, [1, 0] : vector<nx1x<eltty>> to
- // vector<1xnxelty>
- // with:
- // vector.shape_cast %0 : vector<nx1x<eltty>> to vector<1xnxelty>
- //
- // Source with leading unit dim (inverse) is also replaced. Unit dim must
- // be fixed. Non-unit can be scalable.
- if (resType.getRank() == 2 &&
- ((resType.getShape().front() == 1 &&
- !resType.getScalableDims().front()) ||
- (resType.getShape().back() == 1 &&
- !resType.getScalableDims().back())) &&
- transp == ArrayRef<int64_t>({1, 0})) {
- rewriter.replaceOpWithNewOp<vector::ShapeCastOp>(op, resType, input);
- return success();
- }
+ // Replace:
+ // vector.transpose %0, [1, 0] : vector<nx1x<eltty>> to
+ // vector<1xnxelty>
+ // with:
+ // vector.shape_cast %0 : vector<nx1x<eltty>> to vector<1xnxelty>
+ //
+ // Source with leading unit dim (inverse) is also replaced. Unit dim must
+ // be fixed. Non-unit can be scalable.
+ if (resType.getRank() == 2 &&
+ ((resType.getShape().front() == 1 &&
+ !resType.getScalableDims().front()) ||
+ (resType.getShape().back() == 1 &&
+ !resType.getScalableDims().back())) &&
+ transp == ArrayRef<int64_t>({1, 0})) {
+ rewriter.replaceOpWithNewOp<vector::ShapeCastOp>(op, resType, input);
+ return success();
}
if (inputType.isScalable())
>From 756295782287375054ca5ee581fa533bac3e1123 Mon Sep 17 00:00:00 2001
From: ChipsSpectre <maximilian.hornung at tum.de>
Date: Sun, 17 Dec 2023 09:58:58 +0100
Subject: [PATCH 5/5] [clang][Parse] `TryAnnotateCXXScopeToken` to be called
only when parsing C++
Assume `TryAnnotateCXXScopeToken` to be parsing C++ code in all of its paths.
Fixes: https://github.com/llvm/llvm-project/issues/73559.
---
clang/docs/ReleaseNotes.rst | 2 +-
clang/test/Parser/cxx-in-c.c | 4 +++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 59f131ea79465f..92a5b5e39edbcc 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -641,7 +641,7 @@ Bug Fixes in This Version
Fixes (`#67317 <https://github.com/llvm/llvm-project/issues/67317>`_)
- Clang now properly diagnoses use of stand-alone OpenMP directives after a
label (including ``case`` or ``default`` labels).
-- Fix crash when using C++ only tokens like *::* in C compiler clang.
+- Fix crash when using C++ only tokens like ``::`` in C compiler clang.
Fixes (`#73559 https://github.com/llvm/llvm-project/issues/73559`_)
Before:
diff --git a/clang/test/Parser/cxx-in-c.c b/clang/test/Parser/cxx-in-c.c
index bd304260571c4d..034a44cdf12bfa 100644
--- a/clang/test/Parser/cxx-in-c.c
+++ b/clang/test/Parser/cxx-in-c.c
@@ -3,4 +3,6 @@
// PR9137
void f0(int x) : {}; // expected-error{{expected function body after function declarator}}
void f1(int x) try {}; // expected-error{{expected function body after function declarator}}
-::; // expected-error{{expected that double colon marker does not appear in c}}
+
+// GH73559
+::; // expected-error{{expected identifier or '('}}
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