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2008-01-29Add support for eliminating memcpy's at the end of functions. Also fix some ↵Owen Anderson
errors I noticed in the handling of eliminating stores to byval arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46494 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29This would be better done as an executable test.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46493 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29After recent changes we fail to optimize this testDuncan Sands
sufficiently to have it pass. I'm removing it from the testsuite and adding it to PR452 instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46492 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29RegAllocBigBlock doesn't need LiveVariables either.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46488 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Fix to bug 1951: tblgen gratuitously renames variables when no temporary wasScott Michel
generated. This feature would only show up in fairly complex patterns, such as this one in CellSPU: def : Pat<(add (SPUhi tconstpool:$in, 0), (SPUlo tconstpool:$in, 0)), (IOHLlo (ILHUhi tconstpool:$in), tconstpool:$in)>; which generated the following emit code: SDNode *Emit_0(const SDOperand &N, unsigned Opc0, unsigned Opc1, MVT::ValueType VT0, MVT::ValueType VT1) DISABLE_INLINE { SDOperand N0 = N.getOperand(0); SDOperand N00 = N0.getOperand(0); SDOperand N01 = N0.getOperand(1); SDOperand N1 = N.getOperand(1); SDOperand N10 = N1.getOperand(0); SDOperand N11 = N1.getOperand(1); SDOperand Tmp3(CurDAG->getTargetNode(Opc0, VT0, N00), 0); return CurDAG->SelectNodeTo(N.Val, Opc1, VT1, Tmp3, Tmp2); /* Tmp2 s/b N00 */ } Tested against the test suites without incident. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46487 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Properly expand extract-element for non-power-of-2 codegenNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46486 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Handle 'X' constraint in asm's better.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46485 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Filter loops that subtract induction variables.Devang Patel
These loops are not yet handled. Fix PR 1912. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Overhaul Cell SPU's addressing mode internals so that there are nowScott Michel
only two addressing mode nodes, SPUaform and SPUindirect (vice the three previous ones, SPUaform, SPUdform and SPUxform). This improves code somewhat because we now avoid using reg+reg addressing when it can be avoided. It also simplifies the address selection logic, which was the main point for doing this. Also, for various global variables that would be loaded using SPU's A-form addressing, prefer D-form offs[reg] addressing, keeping the base in a register if the variable is used more than once. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46483 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29New test.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46479 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-29Add test to make sure that #pragma mark/error doesn't error if there areBill Wendling
unbalanced quotes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46476 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Added destructor for template class FoldingSetNodeWrapper.Ted Kremenek
Added getValue() to FoldingSetNodeWrapper. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46465 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Simplify the code and fix a typo.Lauro Ramos Venancio
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46458 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Pure/const functions with ByVal parameters cannotDuncan Sands
be marked readonly either. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46456 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Fix fpcmp infinite loop when comparing "29-266" with "29-268".Lauro Ramos Venancio
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46455 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28this test is now compiled into the right thing.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46454 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Unbreak builds with differing object and sourceDuncan Sands
directories. Patch by Sam Bishop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46453 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Make this more likely to be passed byval.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46451 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28If the function has no machine instructions, then emit a "nop" so thatBill Wendling
the function label isn't associated with something it shouldn't be. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46449 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Transform calls to memcpy into llvm.memcpy calls, patch by Eli Friedman.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46433 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28reduce duplicate -I flags passed to the compiler, cleaning up the VERBOSEChris Lattner
output. Patch contributed by Sam Bishop! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46432 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Handle some more combinations of extend and icmp. Fixes PR1940.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46431 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Fix PR1932 by disabling an xform invalid for fdiv.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46429 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28make handling of overflow and undefined results much more clear. Chris Lattner
Patch by Eli Friedman, thanks! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46428 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-28Fix PR1938 by forcing the code that uses an undefined value to branch oneChris Lattner
way or the other. Rewriting the code itself prevents subsequent analysis passes from making contradictory conclusions about the code that could cause an infeasible path to be made feasible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46427 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Always for PACKAGEVERSION to 'mainline' for teh llvm web page.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46425 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Fix PowerPC/./2007-10-18-PtrArithmetic.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46424 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Update this test. Due to dag combiner improvements, we now compileChris Lattner
f7/f11 to: _f7: eor r0, r0, #2, 2 @ -2147483648 bx lr _f11: bic r0, r0, #2, 2 @ -2147483648 bx lr instead of: _f7: fmsr s0, r0 fnegs s0, s0 fmrs r0, s0 bx lr _f11: fmsr s0, r0 fabss s0, s0 fmrs r0, s0 bx lr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46423 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27fix a crash on CodeGen/X86/vector-rem.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46422 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Add support for frameworks. Patch by Shantonu Sen!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46421 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Reg alloc doesn't really need LiveVariables.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46420 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Fixes for BreakCriticalMachineCodeEdge by Fernando.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46419 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Be more careful modifying the use_list while also iterating through it.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46417 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Revert r46393: readonly/readnone functions are noDuncan Sands
longer allowed to write through byval arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46416 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Implement some dag combines that allow doing fneg/fabs/fcopysign in integerChris Lattner
registers if used by a bitconvert or using a bitconvert. This allows us to avoid constant pool loads and use cheaper integer instructions when the values come from or end up in integer regs anyway. For example, we now compile CodeGen/X86/fp-in-intregs.ll to: _test1: movl $2147483648, %eax xorl 4(%esp), %eax ret _test2: movl $1065353216, %eax orl 4(%esp), %eax andl $3212836864, %eax ret Instead of: _test1: movss 4(%esp), %xmm0 xorps LCPI2_0, %xmm0 movd %xmm0, %eax ret _test2: movss 4(%esp), %xmm0 andps LCPI3_0, %xmm0 movss LCPI3_1, %xmm1 andps LCPI3_2, %xmm1 orps %xmm0, %xmm1 movd %xmm1, %eax ret bitconverts can happen due to various calling conventions that require fp values to passed in integer regs in some cases, e.g. when returning a complex. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46414 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27add a noteChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46413 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Use fldz and fld1 for long double constants instead of a constant pool load.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46411 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27make isExactlyValue work for long double.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46410 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27The CorrelatedExpressions pass is now no more.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46409 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27The CorrelatedExpressionElimination pass is known to be buggy. Remove it.Bill Wendling
This fixes PR1769. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46408 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27For long double constants, print an approximation of their value to the .s ↵Chris Lattner
file to make it easier to read. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46407 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-27Fold fptrunc(add (fpextend x), (fpextend y)) -> add(x,y), as GCC does.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46406 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26Add some notes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46405 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26Remove some code for inferring alignment info from the x86 backend Chris Lattner
now that the dag combiner does it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46404 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26New test to verify that "merging 4 loads into a vec load" continues to work and Chris Lattner
continues to infer alignment info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46403 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26make this 64-bit safeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46402 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26Infer alignment of loads and increase their alignment when we can tell they are Chris Lattner
from the stack. This allows us to compile stack-align.ll to: _test: movsd LCPI1_0, %xmm0 movapd %xmm0, %xmm1 *** andpd 4(%esp), %xmm1 andpd _G, %xmm0 addsd %xmm1, %xmm0 movl 20(%esp), %eax movsd %xmm0, (%eax) ret instead of: _test: movsd LCPI1_0, %xmm0 ** movsd 4(%esp), %xmm1 ** andpd %xmm0, %xmm1 andpd _G, %xmm0 addsd %xmm1, %xmm0 movl 20(%esp), %eax movsd %xmm0, (%eax) ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46401 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26remove a useless xfailed test.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46400 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26Invert this test, because it is wrong if we allowDuncan Sands
readonly functions to use byval parameters as local storage (how much do we want this?). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46399 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-26If there's no instructions being emitted on X86 for a function, emit aBill Wendling
nop. Emit the nop directly for PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46398 91177308-0d34-0410-b5e6-96231b3b80d8
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