Evan Cheng
696736be8b
Added sub- register classes information.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28196 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 06:35:30 +00:00
Evan Cheng
8d58e6a9be
Add sub-register class information.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28195 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 06:34:26 +00:00
Chris Lattner
7faec9b93a
Implement MASM sections correctly, without a "has masm sections flag" and a bunch of special case code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28194 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:33:48 +00:00
Chris Lattner
b6c76ec46e
Implement MASM sections correctly, without a "has masm sections flag" and a
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bunch of special case code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28193 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:33:28 +00:00
Chris Lattner
a7090ae7a3
Oh yeah, there are two of these now, unify both.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28192 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:24:50 +00:00
Chris Lattner
b81cb6133e
Setting SwitchToSectionDirective properly in the MASM backend permits a bunch
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of code to be unified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28191 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:23:12 +00:00
Chris Lattner
c9260a1556
MASM doesn't have one of these.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28190 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:21:47 +00:00
Chris Lattner
23b9eac4cb
Don't prefix section directives with a tab. Doing so causes blank lines to
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be emitted to the .s file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28189 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:19:59 +00:00
Chris Lattner
13f161c518
Make the masm codepath work like the normal code path.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28188 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:15:58 +00:00
Chris Lattner
e7027d5339
Preserve prior behavior
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28187 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:15:24 +00:00
Chris Lattner
4ca4bb1ed2
The MASM asmprinter has been fixed, these hacks are no longer needed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28186 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:13:34 +00:00
Chris Lattner
dad9c5a14f
Fix the MASM asmprinter's lies. It does not want to emit code to .text/.data
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it wants it emitted to _text/_data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28185 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 05:12:53 +00:00
Chris Lattner
4632d7a570
Split SwitchSection into SwitchTo{Text|Data}Section methods.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28184 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 04:59:56 +00:00
Chris Lattner
f668ffc4c2
Split SwitchSection into the SwitchTo{Text|Data}Section functions, to better
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support assemblers that distinguish the two.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28183 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 04:59:30 +00:00
Chris Lattner
4c15e33946
Some notes and thoughts to myself
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28182 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 04:58:46 +00:00
Chris Lattner
8d89e7bdbc
Patch to make some xforms preserve each other. Patch contributed by
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Domagoj Babic!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28181 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 04:13:41 +00:00
Reid Spencer
b5d75b8618
Use the -dumpversion option to llvm-gcc which gives us just the version #
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and is unlikely to change in future releases. This also simplifies the
parsing of the full and major llvm-gcc version numbers in the script.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28180 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-09 00:31:01 +00:00
Chris Lattner
e7fd553b3b
Move some methods out of line so that MutexGuard.h isn't needed in a public header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28179 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 22:00:52 +00:00
Chris Lattner
683d1bb712
Move methods out of line so that MutexGuard.h isn't required in the header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28178 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 22:00:26 +00:00
Chris Lattner
9fd868ae0a
Another bad case I noticed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28177 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 21:39:45 +00:00
Chris Lattner
8ef67ac3c3
add a note
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28176 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 21:24:21 +00:00
Chris Lattner
4b37e87ab9
Make the case I just checked in stronger. Now we compile this:
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short test2(short X, short x) {
int Y = (short)(X+x);
return Y >> 1;
}
to:
_test2:
add r2, r3, r4
extsh r2, r2
srawi r3, r2, 1
blr
instead of:
_test2:
add r2, r3, r4
extsh r2, r2
srwi r2, r2, 1
extsh r3, r2
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28175 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 21:18:59 +00:00
Chris Lattner
eaeda56649
Implement and_sext.ll:test3, generating:
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_test4:
srawi r3, r3, 16
blr
instead of:
_test4:
srwi r2, r3, 16
extsh r3, r2
blr
for:
short test4(unsigned X) {
return (X >> 16);
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28174 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 20:59:41 +00:00
Chris Lattner
9b9a3cfe54
new testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28173 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 20:58:58 +00:00
Nate Begeman
7514620052
Yet more readme updating
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28172 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 20:54:02 +00:00
Chris Lattner
a850446a0b
Compile this:
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short test4(unsigned X) {
return (X >> 16);
}
to:
_test4:
movl 4(%esp), %eax
sarl $16, %eax
ret
instead of:
_test4:
movl $-65536, %eax
andl 4(%esp), %eax
sarl $16, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28171 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 20:51:54 +00:00
Nate Begeman
fcf64a91d6
New note about something bad happening in target independent optimizers
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28170 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 20:08:28 +00:00
Nate Begeman
d8624ed07f
Proving once again that I am not as smart as the compiler
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28169 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 19:09:24 +00:00
Nate Begeman
4667f2cbad
Fold more shifts into inserts, and update the README
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28168 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 17:38:32 +00:00
Chris Lattner
2cfd6746ae
Fold shifts with undef operands.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28167 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 17:29:49 +00:00
Chris Lattner
1b7371331f
When tracking demanded bits, if any bits from the sext of an SRA are demanded,
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then so is the input sign bit. This fixes mediabench/g721 on X86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28166 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 17:22:53 +00:00
Nate Begeman
17c275ff2c
Make emission of jump tables a bit less conservative; they are now required
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to be only 31.25% dense, rather than 75% dense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28165 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 16:51:36 +00:00
Evan Cheng
403be7eafc
Fixing truncate. Previously we were emitting truncate from r16 to r8 as
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movw. That is we promote the destination operand to r16. So
%CH = TRUNC_R16_R8 %BP
is emitted as
movw %bp, %cx.
This is incorrect. If %cl is live, it would be clobbered.
Ideally we want to do the opposite, that is emitted it as
movb ??, %ch
But this is not possible since %bp does not have a r8 sub-register.
We are now defining a new register class R16_ which is a subclass of R16
containing only those 16-bit registers that have r8 sub-registers (i.e.
AX - DX). We isel the truncate to two instructions, a MOV16to16_ to copy the
value to the R16_ class, followed by a TRUNC_R16_R8.
Due to bug 770, the register colaescer is not going to coalesce between R16 and
R16_. That will be fixed later so we can eliminate the MOV16to16_. Right now, it
can only be eliminated if we are lucky that source and destination registers are
the same.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28164 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 08:01:26 +00:00
Chris Lattner
023cfb6871
Move the definition of value_use_iterator::getOperandNo to User.h where the
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definition of the User class is available, this fixes the build with some
compiler versions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28163 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 05:59:36 +00:00
Nate Begeman
93376b083e
Update some stuff now that the new rlwimi code has gone in
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28162 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 02:52:38 +00:00
Nate Begeman
5c742681ed
Fix PR772
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28161 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 01:35:01 +00:00
Nate Begeman
f01f31eceb
Remove unncessary include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28160 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-08 01:33:11 +00:00
Chris Lattner
eaee5f5652
This test passes now, remove xfail marker
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Change test to be a positive test instead of a negative test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28159 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-07 18:16:31 +00:00
Evan Cheng
74811450b2
Typo's
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28158 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-07 10:10:20 +00:00
Jeff Cohen
e564de2d37
Unlike Unix, Windows won't let a file be implicitly replaced via renaming without explicit permission.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28157 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-07 02:51:51 +00:00
Nate Begeman
77f361f5b3
New rlwimi implementation, which is superior to the old one. There are
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still a couple missed optimizations, but we now generate all the possible
rlwimis for multiple inserts into the same bitfield. More regression tests
to come.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28156 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-07 00:23:38 +00:00
Chris Lattner
822db93e57
Use ComputeMaskedBits to determine # sign bits as a fallback. This allows us
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to handle all kinds of stuff, including silly things like:
sextinreg(setcc,i16) -> setcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28155 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:48:13 +00:00
Chris Lattner
e60351bb72
Add some more sign propagation cases
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28154 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:40:29 +00:00
Jeff Cohen
943b9b6651
Apply bug fix supplied by Greg Pettyjohn for a bug he found: '<invalid>' is not a legal path on Windows.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28153 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:25:53 +00:00
Chris Lattner
310b578023
Simplify some code, add a couple minor missed folds
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28152 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:06:26 +00:00
Chris Lattner
b9ebacdb4d
constant fold sign_extend_inreg
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28151 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 23:05:41 +00:00
Chris Lattner
541a24f7af
remove cases handled elsewhere
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28150 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 22:43:44 +00:00
Chris Lattner
d6f7fe76a6
Add some more simple sign bit propagation cases.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28149 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 22:39:59 +00:00
Jeff Cohen
d43b18d9e4
Fix some loose ends in MASM support.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28148 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 21:27:14 +00:00
Chris Lattner
a0aec0a61d
new testcase we handle right now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28147 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 18:15:50 +00:00