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2006-09-14Split rotate matching code out to its own function. Make it stronger, byChris Lattner
matching things like ((x >> c1) & c2) | ((x << c3) & c4) to (rot x, c5) & c6 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30376 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-14Use getOffset() instead.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30327 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-14Use MachineConstantPoolEntry getOffset() and getType() accessors.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30326 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-14A MachineConstantPool may have mixed Constant* and MachineConstantPoolValue* ↵Evan Cheng
values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30316 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-13If LSR went through a lot of trouble to put constants (e.g. the addr of a globalChris Lattner
in a specific BB, don't undo this!). This allows us to compile CodeGen/X86/loop-hoist.ll into: _foo: xorl %eax, %eax *** movl L_Arr$non_lazy_ptr, %ecx movl 4(%esp), %edx LBB1_1: #cond_true movl %eax, (%ecx,%eax,4) incl %eax cmpl %edx, %eax jne LBB1_1 #cond_true LBB1_2: #return ret instead of: _foo: xorl %eax, %eax movl 4(%esp), %ecx LBB1_1: #cond_true *** movl L_Arr$non_lazy_ptr, %edx movl %eax, (%edx,%eax,4) incl %eax cmpl %ecx, %eax jne LBB1_1 #cond_true LBB1_2: #return ret This was noticed in 464.h264ref. This doesn't usually affect PPC, but strikes X86 all the time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30290 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-13Compile X << 1 (where X is a long-long) to:Chris Lattner
addl %ecx, %ecx adcl %eax, %eax instead of: movl %ecx, %edx addl %edx, %edx shrl $31, %ecx addl %eax, %eax orl %ecx, %eax and to: addc r5, r5, r5 adde r4, r4, r4 instead of: slwi r2,r9,1 srwi r0,r11,31 slwi r3,r11,1 or r2,r0,r2 on PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30284 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-12Added support for machine specific constantpool values. These are useful forEvan Cheng
representing expressions that can only be resolved at link time, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30278 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-10Behold, more work on relocations. Things are looking pretty good now.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30240 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-10This code was trying too hard. By eliminating redundant edges in the CFGChris Lattner
due to switch cases going to the same place, it make #pred != #phi entries, breaking live interval analysis. This fixes 458.sjeng on x86 with llc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30236 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-09Implement the fpowi now by lowering to a libcallChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30225 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-09Allow targets to custom lower expanded BIT_CONVERT'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30217 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-08First pass at supporting relocations. Relocations are written correctly toNate Begeman
the file now, however the relocated address is currently wrong. Fixing that will require some deep pondering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30207 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-08Non-allocatable physregs can be killed and dead, but don't treat them asChris Lattner
safe for later allocation. This fixes McCat/18-imp with llc-beta. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30204 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-08This fixes Benchmarks/Prolangs-C/unix-smailChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30198 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-08Fix a bunch of llc-beta failures on x86 yesterday. Don't allow selectionChris Lattner
of unallocatable registers, just because an alias is allocatable. We were picking registers like SIL just because ESI was being used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30197 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-07Make target asm info a property of the target machine.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30162 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-07Fix pasto that was breaking x86 tests.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30151 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-07Fix CodeGen/Generic/2006-09-06-SwitchLowering.ll, a bug where SDIsel insertedChris Lattner
too many phi operands when lowering a switch to branches in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30142 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-06Separate target specific asm properties from the asm printers.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30126 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Only call isUse/isDef on register operandsEvan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30122 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Only call isUse/isDef on register operandsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30118 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Don't call isDef on non-registersChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30117 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Change the default to 0, which means 'default'.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30114 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Completely eliminate def&use operands. Now a register operand is EITHER aChris Lattner
def operand or a use operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30109 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Fix a long-standing wart in the code generator: two-address instruction loweringChris Lattner
actually *removes* one of the operands, instead of just assigning both operands the same register. This make reasoning about instructions unnecessarily complex, because you need to know if you are before or after register allocation to match up operand #'s with the target description file. Changing this also gets rid of a bunch of hacky code in various places. This patch also includes changes to fold loads into cmp/test instructions in the X86 backend, along with a significant simplification to the X86 spill folding code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30108 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-04Correct fix for a crasher on functions with live in valuesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30099 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-04Hack around a regression I introduced yesterdayChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30098 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-04forgot thisDuraid Madina
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30097 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-04add setJumpBufSize() and setJumpBufAlignment() to target-lowering.Duraid Madina
Call these from your backend to enjoy setjmp/longjmp goodness, see lib/Target/IA64/IA64ISelLowering.cpp for an example git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30095 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-04new fileChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30082 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-03Avoid beating on the mi2i map when we know the answer already.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30066 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-03minor speedupChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30065 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-03Fix Regression/CodeGen/Generic/2006-09-02-LocalAllocCrash.ll on X86.Chris Lattner
Just because an alias of a register is available, it doesn't mean that we can arbitrarily evict the register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30064 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-03When deleting a machine instruction, make sure to remove it from theChris Lattner
livevariables information. This fixes several regalloc=local failures on x86 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30062 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-03Move two methods out of line, make them work when the record for a machineChris Lattner
instruction includes physregs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30061 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-02improve compat with certain versions of GCC (on cygwin?)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30054 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-02Iteration is required for some cases, even if they don't occur in crafty.Chris Lattner
Restore it, which re-fixes X86/2006-08-21-ExtraMovInst.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30050 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-02When joining two intervals where the RHS is really simple, use a light-weightChris Lattner
method for joining the live ranges instead of the fully-general one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30049 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-01Allow legalizer to expand ISD::MUL using only MULHS in the rare case that isEvan Cheng
possible and the target only supports MULHS. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30022 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-01Corrections.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30021 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-01Pull some code out of a hot recursive function because the common case doesn'tChris Lattner
need recursion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30015 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-01Reserve space in the ValueNumberInfo vector. This speeds up live intervalChris Lattner
analysis 16% on crafty. Wrap long lines. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30012 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-01Iterative coallescing doesn't buy us anything (we get identical results onChris Lattner
crafty with and without it). Removing it speeds up live intervals 6%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30010 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-31DAG combiner fix for rotates. Previously the outer-most condition checksEvan Cheng
for ROTL availability. This prevents it from forming ROTR for targets that has ROTR only. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29997 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-31Add a special case that speeds up coallescing a bit, but not enough.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29996 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-31Delete copies as they are coallesced instead of waiting until the end.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29995 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-31avoid calling the virtual isMoveInstr method endlessly by caching its results.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29994 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-30Fix a compiler crash bootstrapping llvm-gcc.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29989 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-29Teach the coallescer to coallesce live intervals joined by an arbitraryChris Lattner
number of copies, potentially defining live ranges that appear to have differing value numbers that become identical when coallsced. Among other things, this fixes CodeGen/X86/shift-coalesce.ll and PR687. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29968 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-29Handle callee saved registers in dwarf frame info (lead up to exceptionJim Laskey
handling.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29954 91177308-0d34-0410-b5e6-96231b3b80d8
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