because saving i1 and i2 to their ``designated'' stack slots corrupts unknown
memory in other functions, standard libraries, and worse.
In addition, this has the benefit of improving JIT performance because we
eliminate writing out 4 instructions in CompilationCallback() and 2 loads and 2
stores.
llvm-svn: 7653
Since we are including Makefile.test, we automatically get Makefile.common.
Furthermore, the double inclusion of Makefile.common causes the test suite to
be executed twice per invocation of the top level make.
llvm-svn: 7652
2. Handle fp-to-uint conversions directly here instead of relying on
a pre-transformation to replace them with the 2-step conversion.
3. Use size rather than explicitly checking types when deciding what
opcodes to use, wherever possible. This is less error prone (the
bug fix above was not the first time!).
4. Float-to-pointer casts shd now work though this hasn't been tested.
llvm-svn: 7645
* Doxygen-ified comments
* Added capability to make far calls (i.e., beyond 30 bits in CALL instr)
which implies that we need to delete function references that were added by
the call to addFunctionReference() because the actual call instruction is 10
instructions away (thanks to 64-bit address construction)
* Cleaned up code that generates far jumps by using an array+loop
SparcV9CodeEmitter.h:
* Explained more of the side-effects of emitFarCall()
llvm-svn: 7639
This substantially shrinks the size of each machine instruction, which should
make allocation faster and the cache footprint of the machine code lighter.
Here are some timings for code generation of the larger benchmarks we have.
This are timings of code generation phases of the X86 JIT, when compiled in
debug mode:
Before After Diff
164.gzip:
InstSel 0.0878 0.0722 -21.6%
RegAlloc 0.2031 0.1757 -15.6%
TOTAL 0.5585 0.4999 -11.7%
Ptrdist-bc:
InstSel 0.0878 0.0722 -21.6%
RegAlloc 0.2070 0.1933 - 7.1%
TOTAL 0.6972 0.6464 - 7.9%
197.parser:
InstSel 0.2148 0.2148 - 0.0%
RegAlloc 0.4941 0.4277 -15.5%
TOTAL 1.3749 1.2851 - 7.0%
175.vpr:
InstSel 0.2519 0.2109 -19.4%
RegAlloc 0.5976 0.5663 - 5.5%
TOTAL 1.6933 1.6347 - 3.5%
254.gap:
InstSel 1.1328 0.9921 -14.2%
RegAlloc 2.6933 2.4804 - 8.6%
TOTAL 7.7871 7.2499 - 7.4%
llvm-svn: 7622
The shell AND/OR operators short-circuit on command success/failure, which is
the inverse of exit status (i.e. 0 means success, non-zero means failure).
llvm-svn: 7616
o Not all versions of diff have the -q option
o The cmp program is probably faster than diff
Fixed the logic that only copies the file over if no differences are found.
llvm-svn: 7615
1) Check that trapping instructionns that are not guaranteed to execute are not hoisted.
2) Check that trapping instructions that are guaranteed to execute are hoisted.
llvm-svn: 7613
