Chris Lattner
cc65beeb39
Two changes here:
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1. Add new instructions for checking parity flags: JP, JNP, SETP, SETNP.
2. Set the isCommutable and isPromotableTo3Address bits on several
instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19246 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 02:35:46 +00:00
Chris Lattner
cfa0f2edd3
Make the 2-address instruction lowering pass smarter in two ways:
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1. If we are two-addressing a commutable instruction and the LHS is not the
last use of the variable, see if the instruction is the last use of the
RHS. If so, commute the instruction, allowing us to avoid a
register-register copy in many cases for common instructions like ADD, OR,
AND, etc on X86.
2. If #1 doesn't hold, and if this is an instruction that also existing in
3-address form, promote the instruction to a 3-address instruction to
avoid the register-register copy. We can do this for several common
instructions in X86, including ADDrr, INC, DEC, etc.
This patch implements test/Regression/CodeGen/X86/commute-two-addr.ll,
overlap-add.ll, and overlap-shift.ll when I check in the X86 support for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19245 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 02:34:12 +00:00
Chris Lattner
ae37c2a543
Add several testcases for new optimizations in the code generator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19244 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 02:30:04 +00:00
Chris Lattner
aad75aa1a2
Expose isConvertibleToThreeAddress and isCommutable bits to the code generator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19243 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 02:29:04 +00:00
Chris Lattner
15f63ad2e5
Add some bits that can be set on instructions. Renumber existing bits so
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they are dense. Add a virtual method that targets can choose to implement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19242 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 02:28:31 +00:00
Chris Lattner
273f2280f2
Add some bits that can be set for instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19241 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 02:27:48 +00:00
Reid Spencer
52b50a64ec
Make printing a warning message optional in CheckBytecodeOutputToConsole.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19240 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 00:10:03 +00:00
Reid Spencer
b687c0c218
Prevent output of bytecode to std::cout unless the --force flag is given.
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This prevents bytecode splats with usage like: cat file.ll | llvm-as -
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19239 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-02 00:08:46 +00:00
Reid Spencer
5737913c46
Move the code for printing out a warning about bytecode output to a console
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into lib/Support so it can be used with other tools.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19238 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 23:57:01 +00:00
Reid Spencer
436f23ebf5
Implement a function to print a warning if bytecode output is to be sent to
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a terminal/console.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19237 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 23:56:20 +00:00
Jeff Cohen
c6dffe0a5b
Add functions for determining if the stdin/out/err is connected to a
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console or not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19236 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:54:05 +00:00
Jeff Cohen
b63cfccd20
Add llvm-link, Linker projects to Visual Studio.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19235 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:32:26 +00:00
Jeff Cohen
c201755cb1
Add missing header files to projects.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19234 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:30:19 +00:00
Reid Spencer
a01aade75d
Add functions for determining if the stdin/out/err is connected to a
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console or not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19233 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:29:26 +00:00
Jeff Cohen
7109ce8258
Fix typo 'ompress' => 'compress'.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19232 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:10:32 +00:00
Jeff Cohen
8cde0339b9
Add llvm-ranlib project to Visual Studio.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19231 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:05:56 +00:00
Jeff Cohen
a9eaac7758
Add llvm-ar project to Visual Studio.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19230 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 22:00:28 +00:00
Jeff Cohen
094cfdf36b
Add -v option to bison.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19229 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 21:35:39 +00:00
Jeff Cohen
41ca0b171d
Add missing file SystemUtils.cpp to Support project.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19228 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 21:34:18 +00:00
Jeff Cohen
184d84b07d
Add llvm-as project to Visual Studio
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19227 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 20:51:41 +00:00
Jeff Cohen
f80c516c58
Add llvm-dis project to Visual Studio
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19226 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 20:18:03 +00:00
Jeff Cohen
ae7b071d7a
Put executables into a single directory
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19225 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 19:37:14 +00:00
Jeff Cohen
00dcbaa6e5
Fix bountiful sources of VC++ 'possible loss of data' warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19224 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 18:58:23 +00:00
Jeff Cohen
0f7745f2e5
Improve TableGen dependencies
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Move TableGen generated files out of the src tree
Add descriptions to the custom build steps
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19223 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 18:17:40 +00:00
Reid Spencer
9d9c19cf96
Add HAVE_SBRK
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19222 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 18:16:16 +00:00
Reid Spencer
90b3b7162a
Ignore some files
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19221 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 18:14:18 +00:00
Chris Lattner
6e7ba45460
This is a bulk commit that implements the following primary improvements:
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* We can now fold cast instructions into select instructions that
have at least one constant operand.
* We now optimize expressions more aggressively based on bits that are
known to be zero. These optimizations occur a lot in code that uses
bitfields even in simple ways.
* We now turn more cast-cast sequences into AND instructions. Before we
would only do this if it if all types were unsigned. Now only the
middle type needs to be unsigned (guaranteeing a zero extend).
* We transform sign extensions into zero extensions in several cases.
This corresponds to these test/Regression/Transforms/InstCombine testcases:
2004-11-22-Missed-and-fold.ll
and.ll: test28-29
cast.ll: test21-24
and-or-and.ll
cast-cast-to-and.ll
zeroext-and-reduce.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19220 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:22:27 +00:00
Chris Lattner
0f75849116
New testcases that we should combine.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19219 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:14:46 +00:00
Chris Lattner
095b51ee36
New testcase for common bitfield manipulation instruction sequences.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19218 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:14:18 +00:00
Chris Lattner
296fcbaf2c
Add a bunch of tests for cases that should be eliminated.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19217 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:13:43 +00:00
Chris Lattner
e768ff2cdc
Add a bunch of tests for ANDs that should be eliminated.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19216 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:13:19 +00:00
Chris Lattner
05b402ce9f
This now works.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19215 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:12:52 +00:00
Chris Lattner
6dec0b09d5
Fix a FIXME: Select instructions on longs were miscompiled.
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While we're at it, improve codegen of select instructions. For this
testcase:
int %test(bool %C, int %A, int %B) {
%D = select bool %C, int %A, int %B
ret int %D
}
We used to generate this code:
_test:
cmpwi cr0, r3, 0
bne .LBB_test_2 ;
.LBB_test_1: ;
b .LBB_test_3 ;
.LBB_test_2: ;
or r5, r4, r4
.LBB_test_3: ;
or r3, r5, r5
blr
Now we emit:
_test:
cmpwi cr0, r3, 0
bne .LBB_test_2 ;
.LBB_test_1: ;
or r4, r5, r5
.LBB_test_2: ;
or r3, r4, r4
blr
-Chris
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19214 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:10:12 +00:00
Chris Lattner
e7f96c515e
Substantially improve the code generated by non-folded setcc instructions.
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In particular, instead of compiling this:
bool %test(int %A, int %B) {
%C = setlt int %A, %B
ret bool %C
}
to this:
test:
save %sp, -96, %sp
subcc %i0, %i1, %g0
bl .LBBtest_1 !
nop
ba .LBBtest_2 !
nop
.LBBtest_1: !
or %g0, 1, %i0
ba .LBBtest_3 !
nop
.LBBtest_2: !
or %g0, 0, %i0
ba .LBBtest_3 !
nop
.LBBtest_3: !
restore %g0, %g0, %g0
retl
nop
We now compile it to this:
test:
save %sp, -96, %sp
subcc %i0, %i1, %g0
or %g0, 1, %i0
bl .LBBtest_2 !
nop
.LBBtest_1: !
or %g0, %g0, %i0
.LBBtest_2: !
restore %g0, %g0, %g0
retl
nop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19213 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:06:57 +00:00
Chris Lattner
13b2f764c0
Implement SimplifyCFG/DeadSetCC.ll
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SimplifyCFG is one of those passes that we use for final cleanup: it should
not rely on other passes to clean up its garbage. This fixes the "why are
trivially dead setcc's in the output of gccas" problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19212 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:02:12 +00:00
Chris Lattner
72a406eb14
Add new test to make sure simplifycfg doesn't leave around trivially
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dead instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19211 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:00:56 +00:00
Chris Lattner
f5ac6c27ac
Allow getZeroExtend and getSignExtend to work with boolean inputs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19210 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 15:59:57 +00:00
Chris Lattner
801abe663f
Add a useful accessor
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19209 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 15:58:55 +00:00
Chris Lattner
fd1cbc095a
Add two helper functions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19208 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 15:58:41 +00:00
Reid Spencer
9964cd8e9a
Update to autoconf 2.59 standards.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19207 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 09:26:55 +00:00
Reid Spencer
bb4fe3d677
Correct the conditional test for non-portable tools so that it will
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correctly omit them for non-Unix operating systems.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19206 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 22:56:14 +00:00
Reid Spencer
bbf7a8af5a
For PR351:
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Make LLVM_ON_UNIX and LLVM_ON_WIN32 available in the makefiles
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19205 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 22:54:28 +00:00
Reid Spencer
e0a7dddf39
Describe both objdir==srcdir and objdir!=srcdir methods of building LLVM
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libraries and tools. Thanks to Henrik Bach for this suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19204 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 19:48:59 +00:00
Jeff Cohen
45e88d68b3
Where do these tabs keep coming from???
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19203 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 19:03:31 +00:00
Jeff Cohen
51b8d211f6
Mostly cleanup, but also some bug fixes, for win32/Path.cpp
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19202 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 19:01:08 +00:00
Reid Spencer
92ced2f16a
Fix a compilation error for the case where mallinfo() is not available.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19201 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 05:53:27 +00:00
Reid Spencer
ba46ca3a3b
For PR351:
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* lib/System depends on sbrk(3), make sure we check for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19200 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 05:49:15 +00:00
Jeff Cohen
d40a7de229
Get rid of those nasty tabs...
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19199 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 05:07:26 +00:00
Jeff Cohen
ebcb9b3807
Bring win32/Path.cpp up to date with respect to Unix/Path.cpp
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19198 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 04:39:07 +00:00
Reid Spencer
139e1663a6
* Add missing libraries: Linker, Archive, SparcV8
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* Make library descriptions consistently lower case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19197 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-31 00:13:14 +00:00