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970 Commits

Author SHA1 Message Date
Chris Lattner
10197ff5cd ADC and IMUL are also commutable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19264 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-03 01:27:59 +00:00
Jeff Cohen
40296bdf27 Eliminate the use of the global variable hack in the X86 target that was used 
to get Visual Studio to link in X86.lib to the executables that need it.  There
is another way of doing it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19252 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-02 04:23:12 +00:00
Chris Lattner
5aee0b97aa Disable 2->3 address promotion of add and inc instructions to LEA's. In 
addition to being three address, LEA's don't set the flags.

This fixes 186.crafty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19251 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-02 04:18:17 +00:00
Chris Lattner
5dd350defd Add a new method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19249 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-02 02:38:18 +00:00
Chris Lattner
eb96ec52ff Add support for SETNPr to lower to memory form. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19248 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-02 02:37:46 +00:00
Chris Lattner
bcea4d6f28 Implement the convertToThreeAddress method, add support for inverting JP/JNP 
branches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19247 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-02 02:37:07 +00:00
Chris Lattner
cc65beeb39 Two changes here: 
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
6b4f501470 Remove unused enum value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19024 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-17 22:41:46 +00:00
Chris Lattner
8cdbc35216 Change the sentinal 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19007 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-17 00:46:51 +00:00
Chris Lattner
11cf7aa775 Create a stack slot for the return address lazily instead of eagerly. This 
save small amounts of time for functions that don't call llvm.returnaddress
or llvm.frameaddress (which is almost all functions).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19006 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-17 00:07:46 +00:00
Chris Lattner
84b85c8262 Adjust to changes in asmwriter filenames 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18987 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-16 17:33:24 +00:00
Chris Lattner
c0354c904b Set the rounding mode for the X86 FPU to 64-bits instead of 80-bits. We 
don't support long double anyway, and this gives us FP results closer to
other targets.

This also speeds up 179.art from 41.4s to 18.32s, by eliminating a problem
with extra precision that causes an FP == comparison to fail (leading to
extra loop iterations).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18895 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-13 17:23:11 +00:00
Chris Lattner
3ea78c4276 Use the target triple to pick this target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18830 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-12 17:40:28 +00:00
Chris Lattner
223d4c4b3a Fix a regression caused by the previous patch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18449 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-03 05:13:15 +00:00
Chris Lattner
45de191b0b Spill/restore X86 floating point stack registers with 64-bits of precision 
instead of 80-bits of precision.  This fixes PR467.

This change speeds up fldry on X86 with LLC from 7.32s on apoc to 4.68s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18433 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-02 18:17:31 +00:00
Chris Lattner
3986924e0b Consider 64-bit registers to be FP as well. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18432 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-02 17:57:21 +00:00
Tanya Lattner
9855b84469 Reverting this patch: 
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20041122/021428.html

It broke Mutlisource/Applications/obsequi


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18407 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-01 18:27:03 +00:00
Chris Lattner
928b47ae2e Revamp long/ulong comparisons to use a much more efficient sequence (thanks 
to Brian and the Sun compiler for pointing out that the obvious works :)

This also enables folding all long comparisons into setcc and branch
instructions: before we could only do == and !=

For example, for:
void test(unsigned long long A, unsigned long long B) {
   if (A < B) foo();
 }

We now generate:

test:
        subl $4, %esp
        movl %esi, (%esp)
        movl 8(%esp), %eax
        movl 12(%esp), %ecx
        movl 16(%esp), %edx
        movl 20(%esp), %esi
        subl %edx, %eax
        sbbl %esi, %ecx
        jae .LBBtest_2  # UnifiedReturnBlock
.LBBtest_1:     # then
        call foo
        movl (%esp), %esi
        addl $4, %esp
        ret
.LBBtest_2:     # UnifiedReturnBlock
        movl (%esp), %esi
        addl $4, %esp
        ret

Instead of:

test:
        subl $12, %esp
        movl %esi, 8(%esp)
        movl %ebx, 4(%esp)
        movl 16(%esp), %eax
        movl 20(%esp), %ecx
        movl 24(%esp), %edx
        movl 28(%esp), %esi
        cmpl %edx, %eax
        setb %al
        cmpl %esi, %ecx
        setb %bl
        cmove %ax, %bx
        testb %bl, %bl
        je .LBBtest_2   # UnifiedReturnBlock
.LBBtest_1:     # then
        call foo
        movl 4(%esp), %ebx
        movl 8(%esp), %esi
        addl $12, %esp
        ret
.LBBtest_2:     # UnifiedReturnBlock
        movl 4(%esp), %ebx
        movl 8(%esp), %esi
        addl $12, %esp
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18330 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-29 05:55:24 +00:00
Chris Lattner
90b1b457ef Do not push two return addresses on the stack when we call external functions who have their addresses taken. This fixes test-call.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18134 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-22 22:25:30 +00:00
Chris Lattner
88f9386cfe There is no reason to emit function stubs for direct calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18082 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-21 03:46:06 +00:00
Chris Lattner
7fc3824835 ignore generated files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18073 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-21 00:01:54 +00:00
Chris Lattner
e72e445ed5 Remove all JIT specific code and switch the code generator over to emitting 
relocations for global references.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18068 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-20 23:55:15 +00:00
Chris Lattner
7ddde32ead Implement the X86 JIT interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18067 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-20 23:54:33 +00:00
Chris Lattner
8dad013038 Describe the X86 target-specific relocations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18066 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-20 23:54:19 +00:00
Chris Lattner
89d64e262c We implement these interfaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18065 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-20 23:53:56 +00:00
Chris Lattner
3104db054a Dont' forget to switch back to decimal output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18010 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-19 20:57:07 +00:00
Chris Lattner
39a83dc37c Fix a major bug in the signed shr code, which apparently only breaks 134.perl! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17902 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-16 18:40:52 +00:00
Chris Lattner
8f1ac9f90d Remove a dead function, which died when we got GAS emission working (phwew, 
hold your nose!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17869 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-16 04:34:29 +00:00
Chris Lattner
f2d552eca6 Implement a simple FIXME: if we are emitting a basic block address that has 
already been emitted, we don't have to remember it and deal with it later,
just emit it directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17868 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-16 04:30:51 +00:00
Chris Lattner
16fe6f5f24 * Merge some win32 ifdefs together 
* Get rid of "emitMaybePCRelativeValue", either we want to emit a PC relative
  value or not: drop the maybe BS.  As it turns out, the only places where
  the bool was a variable coming in, the bool was a dynamic constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17867 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-16 04:21:18 +00:00
Chris Lattner
5aa3ed92de Add debug-only=jit printout, so we see when lazily resolved symbols are 
set up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17862 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-15 23:16:55 +00:00
Chris Lattner
36c625d3a5 Simplify and rearrange long shift code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17861 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-15 23:16:34 +00:00
Misha Brukman
d2691fdf18 GhostLinkage should not reach asm printing stage 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17750 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 21:03:49 +00:00
Chris Lattner
4b2c09fa22 Don't print unneeded labels 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:27:11 +00:00
Chris Lattner
ce7cafa960 shld is a very high latency operation. Instead of emitting it for shifts of 
two or three, open code the equivalent operation which is faster on athlon
and P4 (by a substantial margin).

For example, instead of compiling this:

long long X2(long long Y) { return Y << 2; }

to:

X3_2:
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        shldl $2, %eax, %edx
        shll $2, %eax
        ret

Compile it to:

X2:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        movl %eax, %edx
        shrl $30, %edx
        leal (%edx,%ecx,4), %edx
        shll $2, %eax
        ret

Likewise, for << 3, compile to:

X3:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        movl %eax, %edx
        shrl $29, %edx
        leal (%edx,%ecx,8), %edx
        shll $3, %eax
        ret

This matches icc, except that icc open codes the shifts as adds on the P4.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17707 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 20:48:57 +00:00
Chris Lattner
62f5a9402c Add missing check 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17706 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 20:04:38 +00:00
Chris Lattner
44205cadba Compile: 
long long X3_2(long long Y) { return Y+Y; }
int X(int Y) { return Y+Y; }

into:

X3_2:
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        addl %eax, %eax
        adcl %edx, %edx
        ret
X:
        movl 4(%esp), %eax
        addl %eax, %eax
        ret

instead of:

X3_2:
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        shldl $1, %eax, %edx
        shll $1, %eax
        ret

X:
        movl 4(%esp), %eax
        shll $1, %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17705 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 20:03:48 +00:00
John Criswell
546faca4ef Correct the name of stosd for the AT&T syntax: 
It's stosl (l for long == 32 bit).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17658 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-10 04:48:15 +00:00
John Criswell
e5cda8e727 Fix compilation problem; make the cast and the LHS be the same type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17488 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-05 16:17:06 +00:00
Chris Lattner
141e3fd81d Quiet VC++ warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17484 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-05 04:50:59 +00:00
Chris Lattner
a62869b064 Fix a warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17431 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-02 15:27:57 +00:00
Chris Lattner
7cc372bfc3 Add placeholder variable to make Win32 work, applied for Morten Ofstad 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17406 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 20:10:20 +00:00
Reid Spencer
6cb21d443e Change Library Names Not To Conflict With Others When Installed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17286 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-27 23:18:45 +00:00
Reid Spencer
8c2c3152d6 Adjust to changes in Makefile.rules 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17167 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-22 21:02:08 +00:00
Reid Spencer
cac731ecbe We won't use automake 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17155 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-22 03:35:04 +00:00
Reid Spencer
86d341b204 Initial automake generated Makefile template 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17136 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-18 23:55:41 +00:00
Chris Lattner
7d0974b9a0 Improve compatibility with VC++, patch contributed by Morten Ofstad! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17126 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-18 15:54:17 +00:00
Chris Lattner
611fb259ba Don't print stuff out from the code generator. This broke the JIT horribly 
last night. :)  bork!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17093 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-17 17:40:50 +00:00
Chris Lattner
56a31c69c8 Rewrite support for cast uint -> FP. In particular, we used to compile this: 
double %test(uint %X) {
        %tmp.1 = cast uint %X to double         ; <double> [#uses=1]
        ret double %tmp.1
}

into:

test:
        sub %ESP, 8
        mov %EAX, DWORD PTR [%ESP + 12]
        mov %ECX, 0
        mov DWORD PTR [%ESP], %EAX
        mov DWORD PTR [%ESP + 4], %ECX
        fild QWORD PTR [%ESP]
        add %ESP, 8
        ret

... which basically zero extends to 8 bytes, then does an fild for an
8-byte signed int.

Now we generate this:


test:
        sub %ESP, 4
        mov %EAX, DWORD PTR [%ESP + 8]
        mov DWORD PTR [%ESP], %EAX
        fild DWORD PTR [%ESP]
        shr %EAX, 31
        fadd DWORD PTR [.CPItest_0 + 4*%EAX]
        add %ESP, 4
        ret

        .section .rodata
        .align  4
.CPItest_0:
        .quad   5728578726015270912

This does a 32-bit signed integer load, then adds in an offset if the sign
bit of the integer was set.

It turns out that this is substantially faster than the preceeding sequence.
Consider this testcase:

unsigned a[2]={1,2};
volatile double G;

void main() {
    int i;
    for (i=0; i<100000000; ++i )
        G += a[i&1];
}

On zion (a P4 Xeon, 3Ghz), this patch speeds up the testcase from 2.140s
to 0.94s.

On apoc, an athlon MP 2100+, this patch speeds up the testcase from 1.72s
to 1.34s.

Note that the program takes 2.5s/1.97s on zion/apoc with GCC 3.3 -O3
-fomit-frame-pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17083 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-17 08:01:28 +00:00
Chris Lattner
07306de06e Unify handling of constant pool indexes with the other code paths, allowing 
us to use index registers for CPI's


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17082 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-17 07:49:45 +00:00
Chris Lattner
0e0ed85697 Give the asmprinter the ability to print memrefs with a constant pool index, 
index reg and scale


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17081 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-17 07:16:32 +00:00
Chris Lattner
de95c9e0bb fold: 
%X = and Y, constantint
  %Z = setcc %X, 0

instead of emitting:

        and %EAX, 3
        test %EAX, %EAX
        je .LBBfoo2_2   # UnifiedReturnBlock

We now emit:

        test %EAX, 3
        je .LBBfoo2_2   # UnifiedReturnBlock

This triggers 581 times on 176.gcc for example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17080 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-17 06:10:40 +00:00
Chris Lattner
30483b0c84 Teach the X86 backend about unreachable and undef. Among other things, we 
now compile:

'foo() {}' into "ret" instead of "mov EAX, 0; ret"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17049 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-16 18:13:05 +00:00
Chris Lattner
358a9027a8 Instruction select globals with offsets better. For example, on this test 
case:

int C[100];
int foo() {
  return C[4];
}

We now codegen:

foo:
        mov %EAX, DWORD PTR [C + 16]
        ret

instead of:

foo:
        mov %EAX, OFFSET C
        mov %EAX, DWORD PTR [%EAX + 16]
        ret

Other impressive features may be coming later.

This patch is contributed by Jeff Cohen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17011 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-15 05:05:29 +00:00
Chris Lattner
8cce7cd0ae Give the X86 JIT the ability to encode global+disp constants. Patch 
contributed by Jeff Cohen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17010 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-15 04:53:13 +00:00
Chris Lattner
d416f086cc Give the X86 asm printer the ability to print out addressing modes that have 
constant displacements from global variables.  Patch by Jeff Cohen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17009 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-15 04:44:53 +00:00
Chris Lattner
fb3d844e50 Allow X86 addressing modes to represent globals with offsets. Patch contributed 
by Jeff Cohen!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17008 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-15 04:43:20 +00:00
Reid Spencer
d96cb6eaa0 Update to reflect changes in Makefile rules. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16950 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-13 11:46:52 +00:00
Reid Spencer
81f76b324e Initial version of automake Makefile.am file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16893 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-10 22:20:40 +00:00
Chris Lattner
222b86f694 The person who was planning to add SSE support isn't anymore, so disable 
the -sse* options (to avoid misleading people).

Also, the stack alignment of the target doesn't depend on whether SSE is
eventually implemented, so remove a comment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16860 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-08 22:41:46 +00:00
Chris Lattner
b0f4e389db Fix a major regression from the bugfix for 2004-10-08-SelectSetCCFold.llx, 
which prevented setcc's from being folded into branches.  It appears that
conditional branchinst's CC operand is actually operand(2), not operand(0)
as we might expect. :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16859 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-08 22:24:31 +00:00
Chris Lattner
d04cd55796 Fix bug: 2004-10-08-SelectSetCCFold.llx. Normally this is hidden by the 
instcombine xform, which is why we didn't notice it before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16840 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-08 16:34:13 +00:00
Chris Lattner
09c750f73d Remove debugging code, fix encoding problem. This fixes the problems 
the JIT had last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16766 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-06 14:31:50 +00:00
Chris Lattner
2483f67914 Codegen signed mod by 2 or -2 more efficiently. Instead of generating: 
t:
        mov %EDX, DWORD PTR [%ESP + 4]
        mov %ECX, 2
        mov %EAX, %EDX
        sar %EDX, 31
        idiv %ECX
        mov %EAX, %EDX
        ret

Generate:
t:
        mov %ECX, DWORD PTR [%ESP + 4]
***     mov %EAX, %ECX
        cdq
        and %ECX, 1
        xor %ECX, %EDX
        sub %ECX, %EDX
***     mov %EAX, %ECX
        ret

Note that the two marked moves are redundant, and should be eliminated by the
register allocator, but aren't.

Compare this to GCC, which generates:

t:
        mov     %eax, DWORD PTR [%esp+4]
        mov     %edx, %eax
        shr     %edx, 31
        lea     %ecx, [%edx+%eax]
        and     %ecx, -2
        sub     %eax, %ecx
        ret

or ICC 8.0, which generates:

t:
        movl      4(%esp), %ecx                                 #3.5
        movl      $-2147483647, %eax                            #3.25
        imull     %ecx                                          #3.25
        movl      %ecx, %eax                                    #3.25
        sarl      $31, %eax                                     #3.25
        addl      %ecx, %edx                                    #3.25
        subl      %edx, %eax                                    #3.25
        addl      %eax, %eax                                    #3.25
        negl      %eax                                          #3.25
        subl      %eax, %ecx                                    #3.25
        movl      %ecx, %eax                                    #3.25
        ret                                                     #3.25

We would be in great shape if not for the moves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16763 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-06 05:01:07 +00:00
Chris Lattner
3ffdff6448 Fix a scary bug with signed division by a power of two. We used to generate: 
s:   ;; X / 4
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, %EAX
        sar %ECX, 1
        shr %ECX, 30
        mov %EDX, %EAX
        add %EDX, %ECX
        sar %EAX, 2
        ret

When we really meant:

s:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, %EAX
        sar %ECX, 1
        shr %ECX, 30
        add %EAX, %ECX
        sar %EAX, 2
        ret

Hey, this also reduces register pressure too :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16761 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-06 04:19:43 +00:00
Chris Lattner
610f1e2785 Codegen signed divides by 2 and -2 more efficiently. In particular 
instead of:

s:   ;; X / 2
        movl 4(%esp), %eax
        movl %eax, %ecx
        shrl $31, %ecx
        movl %eax, %edx
        addl %ecx, %edx
        sarl $1, %eax
        ret

t:   ;; X / -2
        movl 4(%esp), %eax
        movl %eax, %ecx
        shrl $31, %ecx
        movl %eax, %edx
        addl %ecx, %edx
        sarl $1, %eax
        negl %eax
        ret

Emit:

s:
        movl 4(%esp), %eax
        cmpl $-2147483648, %eax
        sbbl $-1, %eax
        sarl $1, %eax
        ret

t:
        movl 4(%esp), %eax
        cmpl $-2147483648, %eax
        sbbl $-1, %eax
        sarl $1, %eax
        negl %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16760 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-06 04:02:39 +00:00
Chris Lattner
d93d3b047c Add some new instructions. Fix the asm string for sbb32rr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16759 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-06 04:01:02 +00:00
Chris Lattner
955f09666d * Prune #includes 
* Update comments
* Rearrange code a bit
* Finally ELIMINATE the GAS workaround emitter for Intel mode.  woot!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16647 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 07:31:08 +00:00
Chris Lattner
ac5701c562 Add support for emitting AT&T style .s files, and make it the default. Users 
may now choose their output format with the -x86-asm-syntax={intel|att} flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16646 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 07:24:48 +00:00
Chris Lattner
8f99eff156 Convert some missed patterns to support AT&T style 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16645 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 07:23:07 +00:00
Chris Lattner
10f873b420 Apparently the GNU assembler has a HUGE hack to be compatible with really 
old and broken AT&T syntax assemblers.  The problem with this hack is that
*SOME* forms of the fdiv and fsub instructions have the 'r' bit inverted.
This was a real pain to figure out, but is trivially easy to support: thus
we are now bug compatible with gas and gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16644 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 07:08:46 +00:00
Chris Lattner
ac6a47588b Fix incorrect suffix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16642 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 05:20:16 +00:00
Chris Lattner
707c6fe3ad Fix some more missed suffixes and swapped operands 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16641 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 01:38:10 +00:00
Chris Lattner
60c715c9a2 Add missing suffixes to FP instructions for AT&T mode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16640 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-04 00:43:31 +00:00
Chris Lattner
9a3e49a1b3 Add support for the -x86-asm-syntax flag, which can be used to choose between 
Intel and AT&T style assembly language.  The ultimate goal of this is to
eliminate the GasBugWorkaroundEmitter class, but for now AT&T style emission
is not fully operational.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16639 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-03 20:36:57 +00:00
Chris Lattner
3a173dfc72 Add support to the instruction patterns for AT&T style output, which will 
hopefully lead to the death of the 'GasBugWorkaroundEmitter'.  This also
includes changes to wrap the whole file to 80 columns! Woot! :)

Note that the AT&T style output has not been tested at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16638 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-03 20:35:00 +00:00
Alkis Evlogimenos
65cbfa0f37 The real x87 floating point registers should not be allocatable. They 
are only used by the stackifier when transforming FPn register
allocations to the real stack file x87 registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16472 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-21 21:22:11 +00:00
Misha Brukman
eae1bf10ea s/ISel/X86ISel/ to have unique class names for debugging via gdb because the C++ 
front-end in gcc does not mangle classes in anonymous namespaces correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16469 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-21 18:21:21 +00:00
Reid Spencer
2da5c3dda6 Convert code to compile with vc7.1. 
Patch contributed by Paolo Invernizzi. Thanks Paolo!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16368 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 17:06:42 +00:00
Misha Brukman
a2700194ae Fit long lines into 80 cols via creative space elimination 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16353 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-15 01:40:18 +00:00
Chris Lattner
b228657acc Revamp the Register class, and allow the use of the RegisterGroup class to 
specify aliases directly in register definitions.

Patch contributed by Jason Eckhardt!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16330 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-14 04:17:02 +00:00
Misha Brukman
fb0796e82e Fix filename: Printer.cpp has become X86AsmPrinter.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16299 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-12 21:26:04 +00:00
Alkis Evlogimenos
93c1ab2e15 Use a shorter form to express implicit use/defs in FpGETRESULT and 
FpSETRESULT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16247 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-08 18:29:31 +00:00
Alkis Evlogimenos
978f629ba9 A call instruction should implicitely define ST0 since the return 
value is returned in that register. The pseudo instructions
FpGETRESULT and FpSETRESULT shold also have an implicity use and def
of ST0 repsecitvely.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16246 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-08 16:54:54 +00:00
Reid Spencer
551ccae044 Changes For Bug 352 
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16137 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-09-01 22:55:40 +00:00
Reid Spencer
fc989e1ee0 Reduce the number of arguments in the instruction builder and make some 
improvements on instruction selection that account for register and frame
index bases.

Patch contributed by Jeff Cohen. Thanks Jeff!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16110 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-30 00:13:26 +00:00
Chris Lattner
6f0161aac3 Add -sse[,2,3] arguments to LLC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16018 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-24 08:18:44 +00:00
Chris Lattner
47d2f2bb50 Nuke commented out stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16017 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-24 08:18:27 +00:00
Chris Lattner
ff0a6e6aac Switch from bytes to bits for alignment for consistency 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15974 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-21 20:14:13 +00:00
Chris Lattner
fae896999c Reduce uses of getRegClass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15973 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-21 20:13:52 +00:00
Chris Lattner
f746a7d09b Rename var 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15897 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-18 02:22:55 +00:00
Chris Lattner
c6393f82bf Start using alignment output routines from AsmPrinter. 
Changes to make this more similar to the ppc asmprinter


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15890 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-17 19:25:42 +00:00
Chris Lattner
8581ee85b4 Use the AsmPrinter emitGlobalConstant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15872 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-17 06:48:55 +00:00
Chris Lattner
055acae18c Start using the AsmPrinter to emit our first class constants. This also 
drops our half-assed support for cygwin, which noone uses and doesn't work
anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15839 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-16 23:16:06 +00:00
Chris Lattner
f60b91cbe3 Disable the pattern isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15787 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 23:02:17 +00:00
Chris Lattner
01d0efba39 Code insertion methods now return void instead of an int. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15780 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 22:15:11 +00:00
Chris Lattner
57f1b67c34 These methods no longer take a TargetRegisterClass* operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15774 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 21:56:44 +00:00
Nate Begeman
f8be5e94aa Eliminate MachineFunction& argument from eliminateFrameIndex in x86 Target. Get MachineFunction from MachineInstruction's parent's parent 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15739 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-14 22:05:10 +00:00
Chris Lattner
c96bb817aa Remove a bunch of ad-hoc target-specific flags that were only used by the 
old asmprinter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15660 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 07:12:04 +00:00
Chris Lattner
8e61d82528 Remove a dead method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15659 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 07:07:14 +00:00
Chris Lattner
2a998bdc7c Finally, the entire instruction asmprinter is now generated from tblgen, woo! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15658 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 07:02:04 +00:00
Chris Lattner
e4ead0ce62 Add asmprintergen support for the last X86 instruction that needs it: pcrelative calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15657 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 06:59:12 +00:00
Chris Lattner
8198fcfc5d This file is long dead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15656 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 06:55:12 +00:00
Chris Lattner
9795b3a0e7 Scrunch memoperands, add a few more for floating point memops 
Eliminate the FPI*m classes, converting them to use FPI instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15655 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 06:50:10 +00:00
Chris Lattner
8549429a78 Move hacks up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15654 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 06:09:55 +00:00
Chris Lattner
0f38e6ccca Make FPI take asm string and operand list 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15653 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 05:54:16 +00:00
Chris Lattner
f5d3a83f65 Nuke the Im*i* patterns, by asmprintergenifying all users. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15652 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 05:31:07 +00:00
Chris Lattner
f29ed0937f X86 instructions that read-modify-write memory are not LLVM two-address instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15651 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 05:07:25 +00:00
Chris Lattner
57a02306c5 Get rid of the Im8, Im16, Im32 classes, converting more instructions over to 
asmprintergeneration


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15650 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 04:31:00 +00:00
Chris Lattner
916f96ace0 Remove dead method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15647 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 02:26:39 +00:00
Chris Lattner
66fa1dcf90 Convert asmprinter to new style of instruction printer 
Start asmprintergen'ifying machine instrs with memory operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15646 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-11 02:25:00 +00:00
Chris Lattner
36b689009d This is purely a formatting patch that gets us closer to the mecca of fitting 
X86InstrInfo.td into 80 columns


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15629 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-10 21:21:30 +00:00
Chris Lattner
1b9e20e32f Drop the first argument of FPI, and asmprinterify fxch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15628 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-10 21:02:13 +00:00
Chris Lattner
30bf2d8951 This purely mechanical patch gives the "I" tblgen class operand list and asm 
string operands, and adjusts all users to pass them in instead of using II.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15624 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-10 20:17:41 +00:00
Chris Lattner
869f477f34 Convert Ii32 instructions over to use the asmprinter generator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15621 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-10 19:06:36 +00:00
Chris Lattner
7d620d57a4 Convert the Ii16 instructions over 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15606 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-10 16:22:02 +00:00
Chris Lattner
ab67067186 Convert all Ii8 instructions over to the autogenerated asmprinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15605 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-10 16:09:54 +00:00
Alkis Evlogimenos
15876bb28c Stop using getValues(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15487 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-04 08:44:43 +00:00
Chris Lattner
bcdda01210 Fix a warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15409 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 19:31:30 +00:00
Chris Lattner
fc752713d7 Convert all I<> instructions to asmformat. 
Delete the 'name' field of all instructions that have asmformats.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15403 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 09:52:59 +00:00
Chris Lattner
a35ce87e2e Eliminate 3 of the X86 printImplicit* flags. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15398 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 08:23:17 +00:00
Chris Lattner
1626c507e8 Get rid of 3 of the 4 'printimplicit' flags. Implicit operands are now 
explicitly listed in the asm string.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15397 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 08:22:29 +00:00
Chris Lattner
0e967d4f48 Convert more instructions over to the asmprinter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15396 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 08:13:11 +00:00
Chris Lattner
25369cfa2b Handle registers a bit more efficiently 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15395 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 08:12:41 +00:00
Chris Lattner
068758e518 give FP stack registers names 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15394 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 08:12:13 +00:00
Chris Lattner
ffff70827c Switch more instructions over to using the asmprinter. Fix bugs in the emission 
of in/out instructions (missing %'s on registers).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15393 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 07:44:35 +00:00
Chris Lattner
b12ee503f7 The tblgen'erated asmparser wants a way to print operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15392 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 07:43:46 +00:00
Chris Lattner
3fa861ac6c Rename the Printer class -> X86AsmPrinter. 
Include the tablegenerated assembly writer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15389 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 06:02:08 +00:00
Chris Lattner
8f945d7756 Factor a bunch of the rules and add support for generating the asmwriter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15388 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 06:01:32 +00:00
Chris Lattner
96563df090 Specify an asm string and operands lists for a bunch of instructions. 
This only really covers no-operand instructions so far.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15387 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 06:01:00 +00:00
Chris Lattner
1ab7c5b5e8 Completely disable the pattern isel until it is more substantial. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15380 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:28:02 +00:00
Chris Lattner
4ad25e432d Entirely eliminate all patterns and expanders from this file. We shall go 
with an incremental approach rather than a revolutionary approach.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15379 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:25:01 +00:00
Chris Lattner
bb737edcc3 Remove obsolete file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15377 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:19:28 +00:00
Alkis Evlogimenos
31e155e610 Align breaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15371 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 10:05:44 +00:00
Chris Lattner
167cf33e1d Add breaks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15365 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:53:31 +00:00
Alkis Evlogimenos
6103c1703c Simplify code a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15364 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:44:32 +00:00
Alkis Evlogimenos
02a453074d Correctly spell 'unconditional'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15363 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:41:44 +00:00
Alkis Evlogimenos
36f506eddb Implement insertGoto and reverseBranchCondition for the X86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15362 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:38:47 +00:00
Chris Lattner
62cce39515 Mark barrier instructions. Execution does not fall through uncond branches 
or return intructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15356 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 02:10:53 +00:00
Misha Brukman
8606aea117 Fix indentation: should be 2 spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15240 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:48:58 +00:00
Misha Brukman
91b5ca838a Fix file header as it has been renamed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15239 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:45:48 +00:00
Misha Brukman
c6d398abbb Renamed files to have the `X86' prefix for uniqueness purposes. 
All CVS history was renamed, the *,v were copied over.  No worries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15238 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:43:11 +00:00
Chris Lattner
cc46c4fcee Remove some (LARGE) abandoned code for the release. If this is ever needed 
again in the future, it can be resurrected out of CVS


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15112 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 21:30:35 +00:00
Chris Lattner
3dbb504081 Fix cases where we generated horrible code like this: 
mov %EDI, 12
        add %EDI, %ECX
        mov %ECX, 12
        add %ECX, %EDX
        mov %EDX, 12
        add %EDX, %ESI

instead (really!) generate this:

        add %ECX, 12
        add %EDX, 12
        add %ESI, 12


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15090 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 21:28:26 +00:00
Chris Lattner
4771288fe3 While I'm at it, don't break codegen of mul by 3,5,9. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15013 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 23:50:57 +00:00
Chris Lattner
596b97f1ab Generate better code for multiplies by negative constants like -4, -1, -9, etc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15012 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 23:47:21 +00:00
Reid Spencer
8863f1814b bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14950 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:38:32 +00:00
Chris Lattner
42df461c90 Make sure to emit the immediate byte for instructions like: 
shrd [mem], reg, imm

This fixes the jit-ls failure on 186.crafty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14914 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 20:26:14 +00:00
Chris Lattner
3b5e6e5f84 Reserve the correct amt of space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14913 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 20:24:05 +00:00
Chris Lattner
76e2df2645 Patches towards fixing PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14841 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:14:30 +00:00