replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
18,103 Commits 2 Branches 0 Tags 1.8 GiB
Commit Graph

171 Commits

Author SHA1 Message Date
Chris Lattner 7d13eae254 Fix a really scary bug that Nate found where we weren't deleting the right 
elements auto of the autoCSE maps.

llvm-svn: 21128
 2005-04-07 00:30:13 +00:00
Nate Begeman b067492535 Teach ExpandShift how to handle shifts by a constant. This allows targets 
like PowerPC to codegen long shifts in many fewer instructions.

llvm-svn: 21122
 2005-04-06 21:13:14 +00:00
Nate Begeman 20b7d2a36f Expand SREM and UREM for targets that claim not to have them, like PowerPC 
llvm-svn: 21103
 2005-04-06 00:23:54 +00:00
Nate Begeman 55e8625c69 Add MULHU and MULHS nodes for the high part of an (un)signed 32x32=64b 
multiply.

llvm-svn: 21102
 2005-04-05 22:36:56 +00:00
Nate Begeman cc00a7c42d Handle expanding arguments to ISD::TRUNCATE. This happens on PowerPC when 
you have something like i16 = truncate i64.  This fixes Regression/C/casts

llvm-svn: 21073
 2005-04-04 00:57:08 +00:00
Chris Lattner 4784489de2 Fix sign_extend and zero_extend of promoted value types to expanded value 
types.  This occurs when casting short to long on PPC for example.

llvm-svn: 21072
 2005-04-03 23:41:52 +00:00
Chris Lattner 0c14000760 transform fabs/fabsf calls into FABS nodes. 
llvm-svn: 21014
 2005-04-02 05:26:53 +00:00
Chris Lattner a0c72cf289 Expand fabs into fneg 
llvm-svn: 21013
 2005-04-02 05:26:37 +00:00
Chris Lattner f68fd0b533 Turn -0.0 - X -> fneg 
llvm-svn: 21011
 2005-04-02 05:04:50 +00:00
Chris Lattner 13fe99c807 Several changes mixed up here. First when legalizing a DAG with pcmarker, 
dont' regen the whole dag if unneccesary.  Second, fix and ugly bug with
the _PARTS nodes that caused legalize to produce multiples of them.
Finally, implement initial support for FABS and FNEG.  Currently FNEG is
the only one to be trusted though.

llvm-svn: 21009
 2005-04-02 05:00:07 +00:00
Chris Lattner c4a2046a88 print fneg/fabs 
llvm-svn: 21008
 2005-04-02 04:58:41 +00:00
Chris Lattner 4157c417a1 fix some bugs in the implementation of SHL_PARTS and friends. 
llvm-svn: 21004
 2005-04-02 04:00:59 +00:00
Chris Lattner 2e5872c671 Turn expanded shift operations into (e.g.) SHL_PARTS if the target supports it. 
llvm-svn: 21002
 2005-04-02 03:38:53 +00:00
Chris Lattner 5b7bb56ef8 Print some new nodes 
llvm-svn: 21001
 2005-04-02 03:30:42 +00:00
Chris Lattner 07f97d5f55 Fix a bug when inserting a libcall into a function with no other calls. 
llvm-svn: 20999
 2005-04-02 03:22:40 +00:00
Nate Begeman 69d39433c4 Fix a warning about an unhandled switch case 
llvm-svn: 20994
 2005-04-02 00:41:14 +00:00
Nate Begeman cda9aa7fa9 Add ISD::UNDEF node 
Teach the SelectionDAG code how to expand and promote it
Have PPC32 LowerCallTo generate ISD::UNDEF for int arg regs used up by fp
  arguments, but not shadowing their value.  This allows us to do the right
  thing with both fixed and vararg floating point arguments.

llvm-svn: 20988
 2005-04-01 22:34:39 +00:00
Andrew Lenharth dec53920b4 PCMarker support for DAG and Alpha 
llvm-svn: 20965
 2005-03-31 21:24:06 +00:00
Chris Lattner 5ca31d9831 Instead of setting up the CFG edges at selectiondag construction time, set 
them up after the code has been emitted.  This allows targets to select one
mbb as multiple mbb's as needed.

llvm-svn: 20937
 2005-03-30 01:10:47 +00:00
Chris Lattner db45f7d763 Fix a bug that andrew noticed where we do not correctly sign/zero extend 
returned integer values all of the way to 64-bits (we only did it to 32-bits
leaving the top bits undefined).  This causes problems for targets like alpha
whose ABI's define the top bits too.

llvm-svn: 20926
 2005-03-29 19:09:56 +00:00
Chris Lattner 32e08b7c06 implement legalization of build_pair for nate 
llvm-svn: 20901
 2005-03-28 22:03:13 +00:00
Nate Begeman f656525cb6 Change interface to LowerCallTo to take a boolean isVarArg argument. 
llvm-svn: 20842
 2005-03-26 01:29:23 +00:00
Chris Lattner 531f9e92d4 This mega patch converts us from using Function::a{iterator|begin|end} to 
using Function::arg_{iterator|begin|end}.  Likewise Module::g* -> Module::global_*.

This patch is contributed by Gabor Greif, thanks!

llvm-svn: 20597
 2005-03-15 04:54:21 +00:00
Chris Lattner 85e7163947 Fix a bug where we would incorrectly do a sign ext instead of a zero ext 
because we were checking the wrong thing.  Thanks to andrew for pointing
this out!

llvm-svn: 20554
 2005-03-10 20:55:51 +00:00
Chris Lattner 7f26946709 constant fold FP_ROUND_INREG, ZERO_EXTEND_INREG, and SIGN_EXTEND_INREG 
This allows the alpha backend to compile:

bool %test(uint %P) {
        %c = seteq uint %P, 0
        ret bool %c
}

into:

test:
        ldgp $29, 0($27)
        ZAP $16,240,$0
        CMPEQ $0,0,$0
        AND $0,1,$0
        ret $31,($26),1

instead of:

test:
        ldgp $29, 0($27)
        ZAP $16,240,$0
        ldiq $1,0
        ZAP $1,240,$1
        CMPEQ $0,$1,$0
        AND $0,1,$0
        ret $31,($26),1

... and fixes PR534.

llvm-svn: 20534
 2005-03-09 18:37:12 +00:00
Chris Lattner a474313902 Fix a bug in the 'store fpimm, ptr' -> 'store intimm, ptr' handling code. 
Changing 'op' here caused us to not enter the store into a map, causing
reemission of the code!!  In practice, a simple loop like this:

no_exit:                ; preds = %no_exit, %entry
        %indvar = phi uint [ %indvar.next, %no_exit ], [ 0, %entry ]            ; <uint> [#uses=3]
        %tmp.4 = getelementptr "complex long double"* %P, uint %indvar, uint 0          ; <double*> [#uses=1]
        store double 0.000000e+00, double* %tmp.4
        %indvar.next = add uint %indvar, 1              ; <uint> [#uses=2]
        %exitcond = seteq uint %indvar.next, %N         ; <bool> [#uses=1]
        br bool %exitcond, label %return, label %no_exit

was being code gen'd to:

.LBBtest_1:     # no_exit
        movl %edx, %esi
        shll $4, %esi
        movl $0, 4(%eax,%esi)
        movl $0, (%eax,%esi)
        incl %edx
        movl $0, (%eax,%esi)
        movl $0, 4(%eax,%esi)
        cmpl %ecx, %edx
        jne .LBBtest_1  # no_exit

Note that we are doing 4 32-bit stores instead of 2.  Now we generate:

.LBBtest_1:     # no_exit
        movl %edx, %esi
        incl %esi
        shll $4, %edx
        movl $0, (%eax,%edx)
        movl $0, 4(%eax,%edx)
        cmpl %ecx, %esi
        movl %esi, %edx
        jne .LBBtest_1  # no_exit

This is much happier, though it would be even better if the increment of ESI
was scheduled after the compare :-/

llvm-svn: 20265
 2005-02-22 07:23:39 +00:00
Misha Brukman 73e929f89d Fix compilation errors with VS 2005, patch by Aaron Gray. 
llvm-svn: 20231
 2005-02-17 21:39:27 +00:00
Chris Lattner 381dddc90c Don't rely on doubles comparing identical to each other, which doesn't work 
for 0.0 and -0.0.

llvm-svn: 20230
 2005-02-17 20:17:32 +00:00
Chris Lattner 0c56a548ed Don't sink argument loads into loops or other bad places. This disables folding of argument loads with instructions that are not in the entry block. 
llvm-svn: 20228
 2005-02-17 19:40:32 +00:00
Chris Lattner 0559691163 Fix a case where were incorrectly compiled cast from short to int on 64-bit 
targets.

llvm-svn: 20030
 2005-02-04 18:39:19 +00:00
Chris Lattner 5aa75e4ce5 Fix yet another memset issue. 
llvm-svn: 19986
 2005-02-02 03:44:41 +00:00
Chris Lattner 4487b2e5a6 Fix some bugs andrew noticed legalizing memset for alpha 
llvm-svn: 19969
 2005-02-01 18:38:28 +00:00
Chris Lattner bc7497d5f5 Alpha doesn't have a native f32 extload instruction. 
llvm-svn: 19880
 2005-01-28 22:58:25 +00:00
Chris Lattner bf8c1ad313 implement legalization of truncates whose results and sources need to be 
truncated, e.g. (truncate:i8 something:i16) on a 32 or 64-bit RISC.

llvm-svn: 19879
 2005-01-28 22:52:50 +00:00
Chris Lattner a4cfafe31a Get alpha working with memset/memcpy/memmove 
llvm-svn: 19878
 2005-01-28 22:29:18 +00:00
Chris Lattner eb6614d719 CopyFromReg produces two values. Make sure that we remember that both are 
legalized, and actually return the correct result when we legalize the chain first.

llvm-svn: 19866
 2005-01-28 06:27:38 +00:00
Chris Lattner 0dfd7d3a0d Silence optimized warnings. 
llvm-svn: 19797
 2005-01-23 23:19:44 +00:00
Chris Lattner 4add7e356f Adjust to changes in SelectionDAG interfaces 
The first half of correct chain insertion for libcalls. This is not enough
to fix Fhourstones yet though.

llvm-svn: 19781
 2005-01-23 04:42:50 +00:00
Chris Lattner 90b7c13f3a Remove the 3 HACK HACK HACKs I put in before, fixing them properly with 
the new TLI that is available.

Implement support for handling out of range shifts.  This allows us to
compile this code (a 64-bit rotate):

unsigned long long f3(unsigned long long x) {
  return (x << 32) | (x >> (64-32));
}

into this:

f3:
        mov %EDX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP + 8]
        ret

GCC produces this:

$ gcc t.c -masm=intel -O3 -S -o - -fomit-frame-pointer
..
f3:
        push    %ebx
        mov     %ebx, DWORD PTR [%esp+12]
        mov     %ecx, DWORD PTR [%esp+8]
        mov     %eax, %ebx
        mov     %edx, %ecx
        pop     %ebx
        ret

The Simple ISEL produces (eww gross):

f3:
        sub %ESP, 4
        mov DWORD PTR [%ESP], %ESI
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, DWORD PTR [%ESP + 12]
        mov %EAX, 0
        mov %ESI, 0
        or %EAX, %ECX
        or %EDX, %ESI
        mov %ESI, DWORD PTR [%ESP]
        add %ESP, 4
        ret

llvm-svn: 19780
 2005-01-23 04:39:44 +00:00
Chris Lattner ffcb0ae329 Adjust to changes in SelectionDAG interface. 
llvm-svn: 19779
 2005-01-23 04:36:26 +00:00
Chris Lattner eccb73d57f Get this to work for 64-bit systems. 
llvm-svn: 19763
 2005-01-22 23:04:37 +00:00
Chris Lattner 3bc78b2e0b More bugfixes for IA64 shifts. 
llvm-svn: 19739
 2005-01-22 00:33:03 +00:00
Chris Lattner ec2183713c Fix problems with non-x86 targets. 
llvm-svn: 19738
 2005-01-22 00:31:52 +00:00
Chris Lattner d637c96fac Add a nasty hack to fix Alpha/IA64 multiplies by a power of two. 
llvm-svn: 19737
 2005-01-22 00:20:42 +00:00
Chris Lattner d53e763f18 Remove unneeded line. 
llvm-svn: 19736
 2005-01-21 23:43:12 +00:00
Chris Lattner 4f987bf16d test commit 
llvm-svn: 19735
 2005-01-21 23:38:56 +00:00
Chris Lattner 96e809c47d Unary token factor nodes are unneeded. 
llvm-svn: 19727
 2005-01-21 18:01:22 +00:00
Chris Lattner aac464e6c0 Refactor libcall code a bit. Initial implementation of expanding int -> FP 
operations for 64-bit integers.

llvm-svn: 19724
 2005-01-21 06:05:23 +00:00
Chris Lattner 4d25c04f94 Simplify the shift-expansion code. 
llvm-svn: 19721
 2005-01-20 20:29:23 +00:00
Chris Lattner b3f83b28a5 Expand add/sub into ADD_PARTS/SUB_PARTS instead of a non-existant libcall. 
llvm-svn: 19715
 2005-01-20 18:52:28 +00:00