https://github.com/smanna12 created https://github.com/llvm/llvm-project/pull/87372
…h loop attribute 'code_align' https://github.com/llvm/llvm-project/pull/70762 added support for new loop attribute [[clang::code_align()]]. This patch fixes bug for the test case below that misses diagnostic due to discontinue to loop while checking duplicate vs conflicting code_align attribute values. [[clang::code_align(4)]] [[clang::code_align(4)]] [[clang::code_align(8)]] for(int I=0; I<128; ++I) { bar(I); } >From 871cc24e5a0ed50665b73847db455d186d5a1ac9 Mon Sep 17 00:00:00 2001 From: "Manna, Soumi" <soumi.ma...@intel.com> Date: Tue, 2 Apr 2024 09:55:29 -0700 Subject: [PATCH] [Clang] Fix bug the way we handle duplicate vs conflicting values with loop attribute 'code_align' https://github.com/llvm/llvm-project/pull/70762 added support for new loop attribute [[clang::code_align()]]. This patch fixes bug for the test case below that misses diagnostic due to discontinue to loop while checking duplicate vs conflicting code_align attribute values. [[clang::code_align(4)]] [[clang::code_align(4)]] [[clang::code_align(8)]] for(int I=0; I<128; ++I) { bar(I); } --- clang/lib/Sema/SemaStmtAttr.cpp | 2 +- clang/test/Sema/code_align.c | 10 ++++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/clang/lib/Sema/SemaStmtAttr.cpp b/clang/lib/Sema/SemaStmtAttr.cpp index 691857e88beb49..b6df4ccf9400c7 100644 --- a/clang/lib/Sema/SemaStmtAttr.cpp +++ b/clang/lib/Sema/SemaStmtAttr.cpp @@ -405,8 +405,8 @@ static void CheckForDuplicateLoopAttrs(Sema &S, ArrayRef<const Attr *> Attrs) { S.Diag((*LastFoundItr)->getLocation(), diag::err_loop_attr_conflict) << *FirstItr; S.Diag((*FirstItr)->getLocation(), diag::note_previous_attribute); + return; } - return; } } diff --git a/clang/test/Sema/code_align.c b/clang/test/Sema/code_align.c index d494d5ea1558f0..0656358dc367b9 100644 --- a/clang/test/Sema/code_align.c +++ b/clang/test/Sema/code_align.c @@ -62,6 +62,11 @@ void foo1(int A) [[clang::code_align(64)]] // expected-error{{conflicting loop attribute 'code_align'}} for(int I=0; I<128; ++I) { bar(I); } + [[clang::code_align(4)]] // expected-note{{previous attribute is here}} + [[clang::code_align(4)]] // OK + [[clang::code_align(8)]] // expected-error{{conflicting loop attribute 'code_align'}} + for(int I=0; I<128; ++I) { bar(I); } + // expected-error@+1{{'code_align' attribute requires an integer argument which is a constant power of two between 1 and 4096 inclusive; provided argument was 7}} [[clang::code_align(7)]] for(int I=0; I<128; ++I) { bar(I); } @@ -135,6 +140,11 @@ void code_align_dependent() { [[clang::code_align(E)]] // cpp-local-error{{conflicting loop attribute 'code_align'}} for(int I=0; I<128; ++I) { bar(I); } + [[clang::code_align(A)]] // cpp-local-note{{previous attribute is here}} + [[clang::code_align(A)]] // OK + [[clang::code_align(E)]] // cpp-local-error{{conflicting loop attribute 'code_align'}} + for(int I=0; I<128; ++I) { bar(I); } + // cpp-local-error@+1{{'code_align' attribute requires an integer argument which is a constant power of two between 1 and 4096 inclusive; provided argument was 23}} [[clang::code_align(B)]] for(int I=0; I<128; ++I) { bar(I); } _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
