diff options
Diffstat (limited to 'Changelog')
| -rw-r--r-- | Changelog | 15 |
1 files changed, 13 insertions, 2 deletions
@@ -1,4 +1,4 @@ -Release 1.12 +Release 1.12, 2013-01-11 ======================== Improvements in confidence: @@ -26,12 +26,22 @@ Performance improvements: - More aggressive elimination of conditional branches during constant propagation, taking better advantage of inferred constants. -Internal simplifications: +Language features: +- By popular demand, "asm" statements for inline assembly are now supported + if the flag -finline-asm is set. Use with extreme caution, as the + semantic preservation proof assumes these statements have no effect + on the processor state. + +Internal simplifications and reorganization: - Clight, Csharpminor, Cminor: suppressed the "Econdition" conditional expressions, no longer useful. - Clight: a single loop form, the three C loops are derived forms. - Clight: volatile memory accesses are materialized as builtin operations. - Clight: removed dependencies on CompCert C syntax and semantics. +- New pass SimplLocals over Clight that replaces local scalar variables + whose address is never taken by temporary, nonadressable variables. + (This used to be done in Cminorgen.) +- Csharpminor: simplified semantics. - Cminor: suppressed the "Oboolval" and "Onotbool" operators, which can be expressed in terms of "Ocmpu" at no performance costs. - All languages: programs are now presented as a list of global definitions @@ -42,6 +52,7 @@ Other changes: - For compatibility with other C compilers, output files are now generated in the current directory, by default; output file name can be controlled with the -o option, somewhat like with GCC. +- Reference interpreter: better handling of volatile memory accesses. - IA32/MacOS X: now supports referencing global variables defined in shared libraries; old hack for stdio is no longer needed. - PowerPC/MacOS X: this port was removed, as recent version of MacOS X |