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2004-11-22Do not push two return addresses on the stack when we call external ↵Chris Lattner
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
2004-11-21There is no reason to emit function stubs for direct calls.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18082 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-21ignore generated filesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18073 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-20Remove all JIT specific code and switch the code generator over to emittingChris Lattner
relocations for global references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18068 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-20Implement the X86 JIT interfacesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18067 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-20Describe the X86 target-specific relocations.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18066 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-20We implement these interfacesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18065 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-19Dont' forget to switch back to decimal outputChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18010 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-16Fix a major bug in the signed shr code, which apparently only breaks 134.perl!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17902 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-16Remove a dead function, which died when we got GAS emission working (phwew,Chris Lattner
hold your nose!) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17869 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-16Implement a simple FIXME: if we are emitting a basic block address that hasChris Lattner
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* Merge some win32 ifdefs togetherChris Lattner
* 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
2004-11-15Add debug-only=jit printout, so we see when lazily resolved symbols areChris Lattner
set up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17862 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-15Simplify and rearrange long shift codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17861 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-14GhostLinkage should not reach asm printing stageMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17750 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Don't print unneeded labelsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13shld is a very high latency operation. Instead of emitting it for shifts ofChris Lattner
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
2004-11-13Add missing checkChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17706 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-13Compile:Chris Lattner
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
2004-11-10Correct the name of stosd for the AT&T syntax:John Criswell
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
2004-11-05Fix compilation problem; make the cast and the LHS be the same type.John Criswell
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17488 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-05Quiet VC++ warningsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17484 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-02Fix a warningChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17431 91177308-0d34-0410-b5e6-96231b3b80d8
2004-11-01Add placeholder variable to make Win32 work, applied for Morten OfstadChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17406 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-27Change Library Names Not To Conflict With Others When InstalledReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17286 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-22Adjust to changes in Makefile.rulesReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17167 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-22We won't use automakeReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17155 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-18Initial automake generated Makefile templateReid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17136 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-18Improve compatibility with VC++, patch contributed by Morten Ofstad!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17126 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-17Don't print stuff out from the code generator. This broke the JIT horriblyChris Lattner
last night. :) bork! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17093 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-17Rewrite support for cast uint -> FP. In particular, we used to compile this:Chris Lattner
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
2004-10-17Unify handling of constant pool indexes with the other code paths, allowingChris Lattner
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
2004-10-17Give the asmprinter the ability to print memrefs with a constant pool index,Chris Lattner
index reg and scale git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17081 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-17fold:Chris Lattner
%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
2004-10-16Teach the X86 backend about unreachable and undef. Among other things, weChris Lattner
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
2004-10-15Instruction select globals with offsets better. For example, on this testChris Lattner
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
2004-10-15Give the X86 JIT the ability to encode global+disp constants. PatchChris Lattner
contributed by Jeff Cohen! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17010 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-15Give the X86 asm printer the ability to print out addressing modes that haveChris Lattner
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
2004-10-15Allow X86 addressing modes to represent globals with offsets. Patch contributedChris Lattner
by Jeff Cohen! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17008 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-13Update to reflect changes in Makefile rules.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16950 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-10Initial version of automake Makefile.am file.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16893 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-08The person who was planning to add SSE support isn't anymore, so disableChris Lattner
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
2004-10-08Fix a major regression from the bugfix for 2004-10-08-SelectSetCCFold.llx,Chris Lattner
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
2004-10-08Fix bug: 2004-10-08-SelectSetCCFold.llx. Normally this is hidden by theChris Lattner
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
2004-10-06Remove debugging code, fix encoding problem. This fixes the problemsChris Lattner
the JIT had last night. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16766 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-06Codegen signed mod by 2 or -2 more efficiently. Instead of generating:Chris Lattner
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
2004-10-06Fix a scary bug with signed division by a power of two. We used to generate:Chris Lattner
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
2004-10-06Codegen signed divides by 2 and -2 more efficiently. In particularChris Lattner
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
2004-10-06Add some new instructions. Fix the asm string for sbb32rrChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16759 91177308-0d34-0410-b5e6-96231b3b80d8
2004-10-04* Prune #includesChris Lattner
* 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
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