For example,
--
ddunbar@giles:Frontend$ clang -c backend-errors.c
fatal error: error in backend: Global variable 'a' has an invalid section specifier
'I AM, not, legal': mach-o section specifier uses an unknown section type.
--
compare to:
--
ddunbar@giles:Frontend$ gcc -c backend-errors.c
/var/folders/DQ/DQ8GT3++HESEzT1obWBynE+++TI/-Tmp-//cc45w2pq.s:2:Expected comma after segment-name
/var/folders/DQ/DQ8GT3++HESEzT1obWBynE+++TI/-Tmp-//cc45w2pq.s:2:Rest of line ignored. 1st junk character valued 77 (M).
--
Yay!
I am not tied to my wording choice, we could also go with "uncoverable error"
for the prefix, or just leave it off entirely.
llvm-svn: 78554
--- Reverse-merging r78535 into '.':
D test/Sema/altivec-init.c
U include/clang/Basic/DiagnosticSemaKinds.td
U include/clang/AST/Expr.h
U include/clang/AST/StmtNodes.def
U include/clang/Parse/Parser.h
U include/clang/Parse/Action.h
U tools/clang-cc/clang-cc.cpp
U lib/Frontend/PrintParserCallbacks.cpp
U lib/CodeGen/CGExprScalar.cpp
U lib/Sema/SemaInit.cpp
U lib/Sema/Sema.h
U lib/Sema/SemaExpr.cpp
U lib/Sema/SemaTemplateInstantiateExpr.cpp
U lib/AST/StmtProfile.cpp
U lib/AST/Expr.cpp
U lib/AST/StmtPrinter.cpp
U lib/Parse/ParseExpr.cpp
U lib/Parse/ParseExprCXX.cpp
llvm-svn: 78551
instead of syntactically as a string. This means that it keeps track of the
segment, section, flags, etc directly and asmprints them in the right format.
This also includes parsing and validation support for llvm-mc and
"attribute(section)", so we should now start getting errors about invalid
section attributes from the compiler instead of the assembler on darwin.
Still todo:
1) Uniquing of darwin mcsections
2) Move all the Darwin stuff out to MCSectionMachO.[cpp|h]
3) there are a few FIXMEs, for example what is the syntax to get the
S_GB_ZEROFILL segment type?
llvm-svn: 78547
In addition to being defined by the AltiVec PIM, this is also the vector
initializer syntax used by OpenCL, so that vector literals are compatible
with macro arguments.
llvm-svn: 78535
make it easier to see interesting ambiguities.
- Also, check that user doesn't try to redefine the super class. This is a wart
in the current design, in that assembler match classes aren't explicitly
declared somewhere (so there isn't a unique place to declare the super
class). This should probably be fixed.
llvm-svn: 78532
- We want the ordering operation to be simple, since we run it on every
match. The old ordering is also not a strict weak ordering when there are
ambiguities, which makes MSVC unhappy.
- While we are at it, detect all ambiguities instead of just the adjacent
ones. There are actually 655, for X86.
llvm-svn: 78526
- Track whether we need to insert an explicit 'break'.
- Invert conditional when matching a single prefix to reduce
nesting/bracing/breaking.
- wc -l of X86GenAsmMatcher.inc decreased by 10%. :)
llvm-svn: 78513
2. Move section switch printing to MCSection virtual method which takes a
TAI. This eliminates textual formatting stuff from TLOF.
3. Eliminate SwitchToSectionDirective, getSectionFlagsAsString, and
TLOFELF::AtIsCommentChar.
llvm-svn: 78510
Evan Cheng