Commit Graph

19 Commits

Author SHA1 Message Date
Bill Wendling 026e5d7667 Instead of passing in an unsigned value for the optimization level, use an enum,
which better identifies what the optimization is doing. And is more flexible for
future uses.

llvm-svn: 70440
2009-04-29 23:29:43 +00:00
Bill Wendling 084669a1c9 Second attempt:
Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'll change the JIT with a follow-up patch.

llvm-svn: 70343
2009-04-29 00:15:41 +00:00
Bill Wendling 56f2987a87 r70270 isn't ready yet. Back this out. Sorry for the noise.
llvm-svn: 70275
2009-04-28 01:04:53 +00:00
Bill Wendling d0ae15946c Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to
use the old behavior, the flag is -O0. This change allows for finer-grained
control over which optimizations are run at different -O levels.

Most of this work was pretty mechanical. The majority of the fixes came from
verifying that a "fast" variable wasn't used anymore. The JIT still uses a
"Fast" flag. I'm not 100% sure if it's necessary to change it there...

llvm-svn: 70270
2009-04-28 00:21:31 +00:00
Dan Gohman 9478c3f8e5 Factor out a bit of code that appears in several places into a
utility function.

llvm-svn: 69937
2009-04-23 23:13:24 +00:00
Devang Patel 46b04e4d06 If FastISel is run and it has known DebugLoc then use it.
llvm-svn: 69253
2009-04-16 01:33:10 +00:00
Dan Gohman 6d75876473 Initialize LiveOutInfo's APInt members to zero, as APInt's
default constructor produces an uninitialized APInt.
This fixes PR3896.

llvm-svn: 67879
2009-03-27 23:51:02 +00:00
Bill Wendling 19e0a5b3c3 Generate these labels when we're in "fast" mode, not simply when we're no in
"optimize-for-size" mode.

llvm-svn: 65064
2009-02-19 21:12:54 +00:00
Bill Wendling 135227a060 Pass in something sensible for the debug location information when creating the
initial PHI nodes of the machine function.

llvm-svn: 63598
2009-02-03 02:20:52 +00:00
Bill Wendling 9862a64419 Alphabetize includes.
llvm-svn: 63591
2009-02-03 01:32:22 +00:00
Dale Johannesen db7c5f6a7b Move CurDebugLoc into SelectionDAGLowering.
llvm-svn: 63468
2009-01-31 02:22:37 +00:00
Anton Korobeynikov 6f219132a7 Initial checkin of APInt'ififcation of switch lowering
llvm-svn: 61395
2008-12-23 22:25:27 +00:00
Bill Wendling db8ec2d75a Add sub/mul overflow intrinsics. This currently doesn't have a
target-independent way of determining overflow on multiplication. It's very
tricky. Patch by Zoltan Varga!

llvm-svn: 60800
2008-12-09 22:08:41 +00:00
Dan Gohman d01ddb51ee Factor out the code for mapping LLVM IR condition opcodes to
ISD condition opcodes into helper functions.

llvm-svn: 57726
2008-10-17 21:16:08 +00:00
Dale Johannesen 86d421df23 Remove SelectionDag early allocation of registers
for earlyclobbers.  Teach Local RA about earlyclobber,
and add some tests for it.

llvm-svn: 56592
2008-09-24 23:13:09 +00:00
Bill Wendling 648930b9ba Implement "visitPow". This is mainly used to see if we have a pow() call of this
form:

          powf(10.0f, x);

If this is the case, and also we want limited precision floating-point
calculations, then lower to do the limited-precision stuff.

llvm-svn: 56035
2008-09-10 00:20:20 +00:00
Dale Johannesen 520143e563 Add hooks for other intrinsics to get low-precision expansions.
llvm-svn: 55845
2008-09-05 18:38:42 +00:00
Dale Johannesen f2a52bbee5 Add -flimit-float-precision to enable some faster,
but less accurate (non-IEEE) code sequences for
certain math library functions.  Add the first of
several such expansions.  Don't worry, if you don't
turn it on it won't affect you.

llvm-svn: 55823
2008-09-05 01:48:15 +00:00
Dan Gohman 575fad337c Split the SelectionDAG-building code, including the FunctionLoweringInfo
and SelectionDAGLowering classes, out of SelectionDAGISel.cpp and put
it in a separate file, SelectionDAGBuild.cpp.

llvm-svn: 55701
2008-09-03 16:12:24 +00:00