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668 Commits

Author SHA1 Message Date
Chris Lattner
db18938355 If a brcond condition is promoted, make sure to zero extend it, even if not 
expanded into BR_CC.

llvm-svn: 31932
 2006-11-27 04:39:56 +00:00
Chris Lattner
94c231f453 Fix PR988 and CodeGen/Generic/2006-11-06-MemIntrinsicExpand.ll. 
The low part goes in the first operand of expandop, not the second one.

llvm-svn: 31487
 2006-11-07 04:11:44 +00:00
Reid Spencer
de46e48420 For PR786: 
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.

llvm-svn: 31380
 2006-11-02 20:25:50 +00:00
Evan Cheng
e6d584765f Fix a typo which can break jumptables. 
llvm-svn: 31305
 2006-10-31 02:31:00 +00:00
Evan Cheng
84a28d4e76 Lower jumptable to BR_JT. The legalizer can lower it to a BRIND or let the target custom lower it. 
llvm-svn: 31293
 2006-10-30 08:00:44 +00:00
Reid Spencer
e0fc4dfc22 For PR950: 
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.

llvm-svn: 31063
 2006-10-20 07:07:24 +00:00
Evan Cheng
ab51cf2e78 Merge ISD::TRUNCSTORE to ISD::STORE. Switch to using StoreSDNode. 
llvm-svn: 30945
 2006-10-13 21:14:26 +00:00
Jim Laskey
6a4c6d3a7a Typo 
llvm-svn: 30884
 2006-10-11 17:52:19 +00:00
Evan Cheng
d35734bd1f Naming consistency. 
llvm-svn: 30878
 2006-10-11 07:10:22 +00:00
Andrew Lenharth
a6bbf33cbf Jimptables working again on alpha. 
As a bonus, use the GOT node instead of the AlphaISD::GOT for internal stuff.

llvm-svn: 30873
 2006-10-11 04:29:42 +00:00
Chris Lattner
8438429c96 Fix another bug in extload promotion. 
llvm-svn: 30857
 2006-10-10 18:54:19 +00:00
Evan Cheng
dc6a3aab71 Fix a bug introduced by my LOAD/LOADX changes. 
llvm-svn: 30853
 2006-10-10 07:51:21 +00:00
Evan Cheng
e71fe34d75 Reflects ISD::LOAD / ISD::LOADX / LoadSDNode changes. 
llvm-svn: 30844
 2006-10-09 20:57:25 +00:00
Chris Lattner
f9f90bc239 Fix a bug legalizing zero-extending i64 loads into 32-bit loads. The bottom 
part was always forced to be sextload, even when we needed an zextload.

llvm-svn: 30782
 2006-10-07 00:58:36 +00:00
Chris Lattner
f5839a0816 Fix a miscompilation of: 
long long foo(long long X) {
  return (long long)(signed char)(int)X;
}

Instead of:

_foo:
        extsb r2, r4
        srawi r3, r4, 31
        mr r4, r2
        blr

we now produce:

_foo:
        extsb r4, r4
        srawi r3, r4, 31
        blr

This fixes a miscompilation in ConstantFolding.cpp.

llvm-svn: 30768
 2006-10-06 17:34:12 +00:00
Evan Cheng
df9ac47e5e Make use of getStore(). 
llvm-svn: 30759
 2006-10-05 23:01:46 +00:00
Evan Cheng
5d9fd977d3 Combine ISD::EXTLOAD, ISD::SEXTLOAD, ISD::ZEXTLOAD into ISD::LOADX. Add an 
extra operand to LOADX to specify the exact value extension type.

llvm-svn: 30714
 2006-10-04 00:56:09 +00:00
Evan Cheng
91d76cb27f Fix an obvious typo. 
llvm-svn: 30711
 2006-10-03 23:08:27 +00:00
Andrew Lenharth
783a4a9d86 Add support for other relocation bases to jump tables, as well as custom asm directives 
llvm-svn: 30593
 2006-09-24 19:45:58 +00:00
Chris Lattner
875ea0cdbd Expand 64-bit shifts more optimally if we know that the high bit of the 
shift amount is one or zero.  For example, for:

long long foo1(long long X, int C) {
  return X << (C|32);
}

long long foo2(long long X, int C) {
  return X << (C&~32);
}

we get:

_foo1:
        movb $31, %cl
        movl 4(%esp), %edx
        andb 12(%esp), %cl
        shll %cl, %edx
        xorl %eax, %eax
        ret
_foo2:
        movb $223, %cl
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        andb 12(%esp), %cl
        shldl %cl, %eax, %edx
        shll %cl, %eax
        ret

instead of:

_foo1:
        subl $4, %esp
        movl %ebx, (%esp)
        movb $32, %bl
        movl 8(%esp), %eax
        movl 12(%esp), %edx
        movb %bl, %cl
        orb 16(%esp), %cl
        shldl %cl, %eax, %edx
        shll %cl, %eax
        xorl %ecx, %ecx
        testb %bl, %bl
        cmovne %eax, %edx
        cmovne %ecx, %eax
        movl (%esp), %ebx
        addl $4, %esp
        ret
_foo2:
        subl $4, %esp
        movl %ebx, (%esp)
        movb $223, %cl
        movl 8(%esp), %eax
        movl 12(%esp), %edx
        andb 16(%esp), %cl
        shldl %cl, %eax, %edx
        shll %cl, %eax
        xorl %ecx, %ecx
        xorb %bl, %bl
        testb %bl, %bl
        cmovne %eax, %edx
        cmovne %ecx, %eax
        movl (%esp), %ebx
        addl $4, %esp
        ret

llvm-svn: 30506
 2006-09-20 03:38:48 +00:00
Evan Cheng
1fc7c363e6 Fix a typo. 
llvm-svn: 30474
 2006-09-18 23:28:33 +00:00
Evan Cheng
4bfaf0bd2c Allow i32 UDIV, SDIV, UREM, SREM to be expanded into libcalls. 
llvm-svn: 30470
 2006-09-18 21:49:04 +00:00
Chris Lattner
e50f5d1fb1 Oh yeah, this is needed too 
llvm-svn: 30407
 2006-09-16 05:08:34 +00:00
Chris Lattner
1b63391fdf simplify control flow, no functionality change 
llvm-svn: 30403
 2006-09-16 00:21:44 +00:00
Chris Lattner
fbadbda6ba Allow custom expand of mul 
llvm-svn: 30402
 2006-09-16 00:09:24 +00:00
Chris Lattner
72b503bcad Compile X << 1 (where X is a long-long) to: 
addl %ecx, %ecx
        adcl %eax, %eax

instead of:

        movl %ecx, %edx
        addl %edx, %edx
        shrl $31, %ecx
        addl %eax, %eax
        orl %ecx, %eax

and to:

        addc r5, r5, r5
        adde r4, r4, r4

instead of:

        slwi r2,r9,1
        srwi r0,r11,31
        slwi r3,r11,1
        or r2,r0,r2

on PPC.

llvm-svn: 30284
 2006-09-13 03:50:39 +00:00
Chris Lattner
f0359b343a Implement the fpowi now by lowering to a libcall 
llvm-svn: 30225
 2006-09-09 06:03:30 +00:00
Chris Lattner
e4bbb6c341 Allow targets to custom lower expanded BIT_CONVERT's 
llvm-svn: 30217
 2006-09-09 00:20:27 +00:00
Evan Cheng
e93762d36e Allow legalizer to expand ISD::MUL using only MULHS in the rare case that is 
possible and the target only supports MULHS.

llvm-svn: 30022
 2006-09-01 18:17:58 +00:00
Chris Lattner
3d27be1333 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
llvm-svn: 29911
 2006-08-27 12:54:02 +00:00
Chris Lattner
451b099113 Fix PR861 
llvm-svn: 29796
 2006-08-21 20:24:53 +00:00
Chris Lattner
bd8877744b eliminate use of getNode that takes vector of valuetypes. 
llvm-svn: 29687
 2006-08-14 23:53:35 +00:00
Chris Lattner
c24a1d3093 Start eliminating temporary vectors used to create DAG nodes. Instead, pass 
in the start of an array and a count of operands where applicable.  In many
cases, the number of operands is known, so this static array can be allocated
on the stack, avoiding the heap.  In many other cases, a SmallVector can be
used, which has the same benefit in the common cases.

I updated a lot of code calling getNode that takes a vector, but ran out of
time.  The rest of the code should be updated, and these methods should be
removed.

We should also do the same thing to eliminate the methods that take a
vector of MVT::ValueTypes.

It would be extra nice to convert the dagiselemitter to avoid creating vectors
for operands when calling getTargetNode.

llvm-svn: 29566
 2006-08-08 02:23:42 +00:00
Chris Lattner
97af9d5d3a Eliminate some malloc traffic by allocating vectors on the stack. Change some 
method that took std::vector<SDOperand> to take a pointer to a first operand
and #operands.

This speeds up isel on kc++ by about 3%.

llvm-svn: 29561
 2006-08-08 01:09:31 +00:00
Chris Lattner
8927c875bb Make SelectionDAG::RemoveDeadNodes iterative instead of recursive, which 
also make it simpler.

llvm-svn: 29524
 2006-08-04 17:45:20 +00:00
Chris Lattner
4488f0c303 Fix a case where LegalizeAllNodesNotLeadingTo could take exponential time. 
This manifested itself as really long time to compile
Regression/CodeGen/Generic/2003-05-28-ManyArgs.ll on ppc.
This is PR847.

llvm-svn: 29313
 2006-07-26 23:55:56 +00:00
Jim Laskey
c3d341ea98 Ensure that dump calls that are associated with asserts are removed from 
non-debug build.

llvm-svn: 29105
 2006-07-11 17:58:07 +00:00
Chris Lattner
1b8ea1f5ba Fix CodeGen/Alpha/2006-07-03-ASMFormalLowering.ll and PR818. 
llvm-svn: 29099
 2006-07-11 01:40:09 +00:00
Chris Lattner
54a34cd20b Mark these two classes as hidden, shrinking libllbmgcc.dylib by 25K 
llvm-svn: 28970
 2006-06-28 21:58:30 +00:00
Evan Cheng
a2e9953c54 Change RET node to include signness information of the return values. e.g. 
RET chain, value1, sign1, value2, sign2

llvm-svn: 28509
 2006-05-26 23:09:09 +00:00
Chris Lattner
aa2372562e Patches to make the LLVM sources more -pedantic clean. Patch provided 
by Anton Korobeynikov!  This is a step towards closing PR786.

llvm-svn: 28447
 2006-05-24 17:04:05 +00:00
Chris Lattner
62f1b83c0e When we legalize target nodes, do not use getNode to create a new node, 
use UpdateNodeOperands to just update the operands!  This is important because
getNode will allocate a new node if the node returns a flag and this breaks
assumptions in the legalizer that you can legalize some things multiple times
and get exactly the same results.

This latent bug was exposed by my ppc patch last night, and this fixes
gsm/toast.

llvm-svn: 28348
 2006-05-17 18:00:08 +00:00
Chris Lattner
a1cec0106a Add an assertion, avoid some unneeded work for each call. No functionality 
change.

llvm-svn: 28347
 2006-05-17 17:55:45 +00:00
Chris Lattner
aaa23d953f Add a new ISD::CALL node, make the default impl of TargetLowering::LowerCallTo 
produce it.

llvm-svn: 28338
 2006-05-16 22:53:20 +00:00
Chris Lattner
5f0edfb849 Legalize FORMAL_ARGUMENTS nodes correctly, we don't want to legalize them once 
for each argument.

llvm-svn: 28313
 2006-05-16 05:49:56 +00:00
Chris Lattner
69a0ce6261 Merge identical code. 
llvm-svn: 28274
 2006-05-13 02:11:14 +00:00
Nate Begeman
1a225d23ae Fix PR773 
llvm-svn: 28207
 2006-05-09 18:20:51 +00:00
Owen Anderson
20a631fde7 Refactor TargetMachine, pushing handling of TargetData into the target-specific subclasses. This has one caller-visible change: getTargetData() now returns a pointer instead of a reference. 
This fixes PR 759.

llvm-svn: 28074
 2006-05-03 01:29:57 +00:00
Nate Begeman
4ca2ea5b43 JumpTable support! What this represents is working asm and jit support for 
x86 and ppc for 100% dense switch statements when relocations are non-PIC.
This support will be extended and enhanced in the coming days to support
PIC, and less dense forms of jump tables.

llvm-svn: 27947
 2006-04-22 18:53:45 +00:00
Chris Lattner
73eb58e1a2 Simplify some code 
llvm-svn: 27846
 2006-04-19 23:17:50 +00:00