diff options
Diffstat (limited to 'gcc/doc/passes.texi')
| -rw-r--r-- | gcc/doc/passes.texi | 31 |
1 files changed, 1 insertions, 30 deletions
diff --git a/gcc/doc/passes.texi b/gcc/doc/passes.texi index 045f964..d8e4315 100644 --- a/gcc/doc/passes.texi +++ b/gcc/doc/passes.texi @@ -225,20 +225,6 @@ stuff quickly rather than wait until later when it's more work to get rid of it. This pass is located in @file{tree-cfg.c} and described by @code{pass_remove_useless_stmts}. -@item Mudflap declaration registration - -If mudflap (@pxref{Optimize Options,,-fmudflap -fmudflapth --fmudflapir,gcc,Using the GNU Compiler Collection (GCC)}) is -enabled, we generate code to register some variable declarations with -the mudflap runtime. Specifically, the runtime tracks the lifetimes of -those variable declarations that have their addresses taken, or whose -bounds are unknown at compile time (@code{extern}). This pass generates -new exception handling constructs (@code{try}/@code{finally}), and so -must run before those are lowered. In addition, the pass enqueues -declarations of static variables whose lifetimes extend to the entire -program. The pass is located in @file{tree-mudflap.c} and is described -by @code{pass_mudflap_1}. - @item OpenMP lowering If OpenMP generation (@option{-fopenmp}) is enabled, this pass lowers @@ -576,18 +562,6 @@ run last so that we have as much time as possible to prove that the statement is not reachable. It is located in @file{tree-cfg.c} and is described by @code{pass_warn_function_return}. -@item Mudflap statement annotation - -If mudflap is enabled, we rewrite some memory accesses with code to -validate that the memory access is correct. In particular, expressions -involving pointer dereferences (@code{INDIRECT_REF}, @code{ARRAY_REF}, -etc.) are replaced by code that checks the selected address range -against the mudflap runtime's database of valid regions. This check -includes an inline lookup into a direct-mapped cache, based on -shift/mask operations of the pointer value, with a fallback function -call into the runtime. The pass is located in @file{tree-mudflap.c} and -is described by @code{pass_mudflap_2}. - @item Leave static single assignment form This pass rewrites the function such that it is in normal form. At @@ -968,10 +942,7 @@ This pass outputs the assembler code for the function. The source files are @file{final.c} plus @file{insn-output.c}; the latter is generated automatically from the machine description by the tool @file{genoutput}. The header file @file{conditions.h} is used for communication between -these files. If mudflap is enabled, the queue of deferred declarations -and any addressed constants (e.g., string literals) is processed by -@code{mudflap_finish_file} into a synthetic constructor function -containing calls into the mudflap runtime. +these files. @item Debugging information output |