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2006-02-16Rework the SelectionDAG-based implementations of SimplifyDemandedBitsNate Begeman
and ComputeMaskedBits to match the new improved versions in instcombine. Tested against all of multisource/benchmarks on ppc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26238 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16don't build the skeleton targetChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26237 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16remove support for the skeleton targetChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26236 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16Change SplitBlock to increment a BasicBlock::iterator, not an Instruction*. ↵Chris Lattner
Apparently they do different things :) This fixes a testcase that nate reduced from spass. Also included are a couple minor code changes that don't affect the generated code at all. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26235 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16MOVAPSrr and MOVAPDrr instruction format should be MRMSrcReg.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26234 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16distinguish between objects and register names, now we can have stuffDuraid Madina
with names like "f84", "in6" etc etc. this should fix one or two tests git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26232 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16If the false case is the current basic block, then this is a self loop.Evan Cheng
We do not want to emit "Loop: ... brcond Out; br Loop", as it adds an extra instruction in the loop. Instead, invert the condition and emit "Loop: ... br!cond Loop; br Out. Generalize the fix by moving it from PPCDAGToDAGISel to SelectionDAGLowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26231 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16Lowering of sdiv X, pow2 was broken, this fixes it. This patch is writtenChris Lattner
by Nate, I'm just committing it for him. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26230 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16Fix a minor makefile bug with lex/yacc handling that nate noticed. We don'tChris Lattner
want to copy the files when the .cpp file changes, we want to copy them to the .cvs versions when the .l/.y file change (like the comments even say). This avoids having bogus changes show up in diffs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26229 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16Fix VC++ warning.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26228 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16Visual Studio enters the future of bisoning.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26227 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16Use movaps / movapd (instead of movss / movsd) to do FR32 / FR64 reg to regEvan Cheng
transfer. According to the Intel P4 Optimization Manual: Moves that write a portion of a register can introduce unwanted dependences. The movsd reg, reg instruction writes only the bottom 64 bits of a register, not to all 128 bits. This introduces a dependence on the preceding instruction that produces the upper 64 bits (even if those bits are not longer wanted). The dependence inhibits register renaming, and thereby reduces parallelism. Not to mention movaps is shorter than movss. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26226 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16fix a bug where we unswitched the wrong wayChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26225 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16A bit more memset / memcpy optimization.Evan Cheng
Turns them into calls to memset / memcpy if 1) buffer(s) are not DWORD aligned, 2) size is not known to be greater or equal to some minimum value (currently 128). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26224 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Implement trivial unswitching for switch stmts. This allows us to trivialChris Lattner
unswitch this loop on 2 before sweating to unswitch on 1/3. void test4(int N, int i, int C, int*P, int*Q) { int j; for (j = 0; j < N; ++j) { switch (C) { // general unswitching. default: P[i+j] = 0; break; case 1: Q[i+j] = 0; break; case 3: P[i+j] = Q[i+j]; break; case 2: break; // TRIVIAL UNSWITCH on C==2 } } } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26223 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Remove an entry.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26222 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Remove an unused function parameter.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26221 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15make "trivial" unswitching significantly more general. It can now handleChris Lattner
this for example: for (j = 0; j < N; ++j) { // trivial unswitch if (C) P[i+j] = 0; } turning it into the obvious code without bothering to duplicate an empty loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26220 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Turn a memcpy from string constant into a series of stores of constant values.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26219 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15fix a bunch of alpha regressions. see bug 709Andrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26218 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15new testChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26217 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Should not combine ISD::LOCATIONs until we have scheme to remove fromJim Laskey
MachineDebugInfo tables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26216 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Checking the wrong value. This caused us to emit silly code likeChris Lattner
Y = seteq bool X, true instead of just using X :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26215 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Code sufficiently protected against this test.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26213 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15reverting previous change, will add support for other compilers laterDuraid Madina
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26211 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Convert over to the new way of handling lex/bison checked into cvsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26209 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Check the new form for bison output into CVSChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26208 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15bugfixesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26207 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Convert this over to work with the new makefilesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26206 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Convert the bison-output-checked-into-cvs makefile handling stuff to workChris Lattner
like the flex stuff, which actually works when people do cvs updates and get conflicts in the updated checked in file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26205 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Sparc actually *DOES* have a directive for emitting zeros. In fact, it requiresChris Lattner
it, because this: .bss X: .byte 0 results in the assembler warning: "initialization in bss segment". Annoying. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26204 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15random lexer change to test the makefile updating stuffChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26203 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Fix SingleSource/Regression/C/2004-08-12-InlinerAndAllocas.c on Sparc.Chris Lattner
The ABI specifies that there is a register save area at the bottom of the stack, which means the actual used pointer needs to be an offset from the subtracted value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26202 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15HP aCC (and a bunch of other compilers, no doubt) don't shareDuraid Madina
GCC's syntax for auto-dependency generation stuff. This should be changed to be disabling dependency stuff unless GCC/ICC is found. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26201 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15oops, I meant thisDuraid Madina
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26200 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15zapDuraid Madina
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26199 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15previously, configure would die if GCC or ICC was not found. Now it'llDuraid Madina
go through, but we do want to know if we're using GCC/ICC since they share certain funky command line options (for dependency generation stuff) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26198 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Remove an entry.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26197 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Use .zerofill on x86/darwin.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26196 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15Lower memcpy with small constant size operand into a series of load / storeEvan Cheng
ops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26195 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15more refactoring, no functionality change.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26194 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15cvtsd2ss / cvtss2sd encoding bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26193 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15movaps, movapd encoding bug.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26192 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-15pull some code out into a functionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26191 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14new testcase that broke unswitch due to loopsimplify not doing the right thing.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26190 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14Canonicalize inner loops before outer loops. Inner loop canonicalizationChris Lattner
can provide work for the outer loop to canonicalize. This fixes a case that breaks unswitching. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26189 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14Doh again!Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26188 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14When splitting exit edges to canonicalize loops, make sure to put the newChris Lattner
block in the appropriate loop nest. Third time is the charm, right? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26187 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14new noteChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26186 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14If we have zero initialized data with external linkage, use .zerofill toChris Lattner
emit it (instead of .space), saving a bit of space in the .o file. For example: int foo[100]; int bar[100] = {}; when compiled with C++ or -fno-common results in shrinkage from 1160 to 360 bytes of space. The X86 backend can also do this on darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26185 91177308-0d34-0410-b5e6-96231b3b80d8
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