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30295 Commits

Author SHA1 Message Date
Chris Lattner db2049fb8e move target independent calling convention stuff to TargetCallingConv.td 
llvm-svn: 34659
 2007-02-27 05:57:32 +00:00
Chris Lattner 4c83b98604 fill in some holes 
llvm-svn: 34658
 2007-02-27 05:51:05 +00:00
Chris Lattner c9eed39a5d switch x86-64 return value lowering over to using same mechanism as argument 
lowering uses.

llvm-svn: 34657
 2007-02-27 05:28:59 +00:00
Chris Lattner 9f059194a7 Minor refactoring of CC Lowering interfaces 
llvm-svn: 34656
 2007-02-27 05:13:54 +00:00
Chris Lattner dc3adc83e7 move CC Lowering stuff to its own public interface 
llvm-svn: 34655
 2007-02-27 04:43:02 +00:00
Chris Lattner 2e5e8407ad refactor x86-64 argument lowering yet again, this time eliminating templates, 
'clients', etc, and adding CCValAssign instead.

llvm-svn: 34654
 2007-02-27 04:18:15 +00:00
Chris Lattner 33e93b84af ConstantFolding.cpp/h -> ConstantFold.cpp/h to avoid confusion with 
lib/Analysis/ConstantFolding.

llvm-svn: 34653
 2007-02-27 03:05:06 +00:00
Evan Cheng 5d7ce57c13 Backing out Jim's LR spill changes. This was causing llvm-gcc bootstrapping 
to infinite loop:
PPCMachineFunctionInfo.h updated: 1.2 -> 1.3
PPCRegisterInfo.cpp updated: 1.110 -> 1.111
PPCRegisterInfo.h updated: 1.28 -> 1.29

llvm-svn: 34652
 2007-02-27 02:55:29 +00:00
Reid Spencer 8cd69de23e XFAIL this on x86-Linux until its fixed. 
llvm-svn: 34651
 2007-02-27 02:45:12 +00:00
Reid Spencer 5c41e96631 Remove test cases that produce undefined results. 
llvm-svn: 34650
 2007-02-27 02:34:02 +00:00
Evan Cheng ca25c0ee0d forward() should not increment internal iterator. Its client may insert instruction between now and next forward() call. 
llvm-svn: 34649
 2007-02-27 01:58:48 +00:00
Reid Spencer 974551a7e9 Simplify and document RoundDoubleToAPInt. 
llvm-svn: 34648
 2007-02-27 01:28:10 +00:00
Reid Spencer b31bffed96 For PR1205: 
Implement the first step towards arbitrary precision integer support in
LLVM. The APInt class provides arbitrary precision arithmetic and value
representation. This patch changes ConstantInt to use APInt as its value
representation without supporting bit widths > 64 yet. That change will
come after ConstantFolding handles bit widths > 64 bits.

llvm-svn: 34647
 2007-02-26 23:54:03 +00:00
Reid Spencer 7c16cd2746 1. Make sure all delete operators of arrays use the array form of delete. 
2. Rewrite operator=(const APInt& RHS) to allow the RHS to be a different
   bit width than the LHS. This makes it possible to use APInt as the key
   of a DenseMap, as needed for the IntConstants map in Constants.cpp
3. Fix operator=(uint64_t) to clear unused bits in case the client assigns
   a value that has more bits than the APInt allows.
4. Assert that bit widths are equal in operator==
5. Revise getHashValue() to put the bit width in the low order six bits.
   This should help to make i1 0, i2 0, ... i64 0 all distinct in the
   IntConstants DenseMap.

llvm-svn: 34646
 2007-02-26 23:38:21 +00:00
Evan Cheng bdec83e4d2 Joining an interval with a dead copy instruction. Shorten the live range to the last use. 
llvm-svn: 34645
 2007-02-26 21:37:37 +00:00
Reid Spencer 3d88599863 Fix indentation. 
llvm-svn: 34643
 2007-02-26 21:06:05 +00:00
Reid Spencer b2bc985a4e Implement the getHashValue method. 
Fix toString use of getValue to use getZExtValue()

llvm-svn: 34642
 2007-02-26 21:02:27 +00:00
Reid Spencer eed186ee58 1. Split getValue() into getSExtValue() and getZExtValue() to match 
ConstantInt better.
2. Add a getHashValue() method.

llvm-svn: 34641
 2007-02-26 20:57:12 +00:00
Devang Patel 97517ff930 Use efficient container SmallPtrSet 
llvm-svn: 34640
 2007-02-26 20:22:50 +00:00
Chris Lattner 535bd6d3ba always lower to RETFLAG, never leave it as just ret. 
llvm-svn: 34639
 2007-02-26 19:44:02 +00:00
Devang Patel 967b84c681 Do not unswitch loop on same value again and again. 
llvm-svn: 34638
 2007-02-26 19:31:58 +00:00
Chris Lattner 77f0a1553c fix attribution 
llvm-svn: 34637
 2007-02-26 18:56:07 +00:00
Chris Lattner 5d00a0b8a9 Add a description of the X86-64 calling convention and the return 
conventions.  This doesn't do anything yet, but may in the future.

llvm-svn: 34636
 2007-02-26 18:17:14 +00:00
Reid Spencer 62530f93b3 Implement inline methods that make transition of ConstantInt to use APInt 
easier to comprehend and might be useful elsewhere.

llvm-svn: 34635
 2007-02-26 17:50:32 +00:00
Reid Spencer f09418d428 Re-enable this. The header was committed. 
llvm-svn: 34634
 2007-02-26 08:10:54 +00:00
Chris Lattner ff19957468 switch to smallvector 
llvm-svn: 34633
 2007-02-26 07:59:53 +00:00
Chris Lattner d9fc268035 another missing header :( :( :( 
llvm-svn: 34632
 2007-02-26 07:51:00 +00:00
Chris Lattner 294780829a initial hack at splitting the x86-64 calling convention info out from the 
mechanics that process it.  I'm still not happy with this, but it's a step
in the right direction.

llvm-svn: 34631
 2007-02-26 07:50:02 +00:00
Reid Spencer 862ee00550 Make isNegative() a const function since it doesn't modify the APInt. 
llvm-svn: 34630
 2007-02-26 07:45:40 +00:00
Reid Spencer aa8dcfe441 1. Remove redundant calls to clearUsedBits(). 
2. Fix countTrailingZeros to use a faster algorithm.
3. Simplify sext() slightly by using isNegative().
4. Implement ashr using word-at-a-time logic instead of bit-at-a-time
5. Rename locals named isNegative so they don't clash with method name.
6. Fix fromString to compute negated value correctly.

llvm-svn: 34629
 2007-02-26 07:44:38 +00:00
Chris Lattner d41bff0f97 the truncate must always be done, it's only the assert that is conditional. 
llvm-svn: 34628
 2007-02-26 05:21:05 +00:00
Chris Lattner dd89d9c648 reapply my previous patch with a bugfix. 
llvm-svn: 34627
 2007-02-26 05:02:39 +00:00
Chris Lattner b5359f0994 revert my previous change, something strange is happening. 
llvm-svn: 34626
 2007-02-26 04:43:19 +00:00
Chris Lattner 74f5bcf8eb add an accessor. 
llvm-svn: 34625
 2007-02-26 04:01:25 +00:00
Chris Lattner 68a8bcce99 emit an enum value for the # of target registers. 
llvm-svn: 34624
 2007-02-26 03:34:38 +00:00
Chris Lattner 1db979bae8 in X86-64 CCC, i8/i16 arguments are already properly zext/sext'd on input. 
Capture this so that downstream zext/sext's are optimized out.  This
compiles:
  int test(short X) { return (int)X; }

to:

_test:
        movl %edi, %eax
        ret

instead of:

_test:
        movswl %di, %eax
        ret


GCC produces this bizarre code:

_test:
        movw    %di, -12(%rsp)
        movswl  -12(%rsp),%eax
        ret

llvm-svn: 34623
 2007-02-26 03:18:56 +00:00
Chris Lattner 900b4f62be new testcase 
llvm-svn: 34622
 2007-02-26 03:16:20 +00:00
Chris Lattner fce448f856 Fold (sext (truncate x)) more aggressively, by avoiding creation of a 
sextinreg if not needed.   This is useful in two cases: before legalize,
it avoids creating a sextinreg that will be trivially removed.  After legalize
if the target doesn't support sextinreg, the trunc/sext would not have been
removed before.

llvm-svn: 34621
 2007-02-26 03:13:59 +00:00
Chris Lattner ab5d0ac02c track signedness of formal argument, though we have a fixme here. 
llvm-svn: 34620
 2007-02-26 02:56:58 +00:00
Reid Spencer 5aa8560eab Add an isNegative method to determine if the APInt's value is negative. 
This is much less expensive than a test against zero.

llvm-svn: 34619
 2007-02-26 01:20:59 +00:00
Reid Spencer 44eef169fa Rewrite lshr to not do bit by bit copy but to copy and shift whole words. 
This makes it much more efficient.

llvm-svn: 34618
 2007-02-26 01:19:48 +00:00
Reid Spencer fb55b7b99d Fix sext operation. Shifting by zero would leave an incorrect mask. 
llvm-svn: 34617
 2007-02-25 23:54:00 +00:00
Reid Spencer b6b5cc3e2f 1. Fix the flip() method to correctly flip all words of the APInt. 
2. Implement the trunc, sext, and zext operations.
3. Improve fromString to accept negative values as input.

llvm-svn: 34616
 2007-02-25 23:44:53 +00:00
Chris Lattner 8924332e22 Fix an X86-64 abi bug. We now compile: 
void foo(short);
void bar(unsigned short A) {
  foo(A);
}

into:

_bar:
        subq $8, %rsp
        movswl %di, %edi
        call _foo
        addq $8, %rsp
        ret

instead of:

_bar:
        subq $8, %rsp
        call _foo
        addq $8, %rsp
        ret

Testcase here: test/CodeGen/X86/x86-64-shortint.ll

llvm-svn: 34615
 2007-02-25 23:10:46 +00:00
Chris Lattner c864f6a786 new testcase 
llvm-svn: 34614
 2007-02-25 23:08:29 +00:00
Chris Lattner 3e0703357f fix CodeGen/X86/2007-02-25-FastCCStack.ll, a regression from my patch last 
night:  fastcc returns should only go in XMM0 if we have SSE2 or above.

llvm-svn: 34613
 2007-02-25 22:23:46 +00:00
Chris Lattner 39a72143cb new testcase 
llvm-svn: 34612
 2007-02-25 22:23:15 +00:00
Chris Lattner eef0a351b1 new testcase 
llvm-svn: 34611
 2007-02-25 22:02:01 +00:00
Jim Laskey 14059d958a Fix for PR1224. 
llvm-svn: 34610
 2007-02-25 21:43:59 +00:00
Jim Laskey 619d4bddc7 Test for PR1224. 
llvm-svn: 34609
 2007-02-25 21:43:21 +00:00