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2005-09-09Teach the code generator that rlwimi is commutable if the rotate amountChris Lattner
is zero. This lets the register allocator elide some copies in some cases. This implements CodeGen/PowerPC/rlwimi-commute.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23292 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-09Introduce two new concepts:Chris Lattner
1. Add support for defining Pattern's, which can match expressions when there is no instruction that directly implements something. Instructions usually implicitly define patterns. 2. Add support for defining SDNodeXForm's, which are node transformations. This seperates the concept of a node xform out from the existing predicate support. Using this new stuff, we add a few instruction patterns, one for testing, and two for OR/XOR by an arbitrary immediate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23286 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-08whitespace/comment changes, no functionality diffsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23283 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-08Add a bunch of stuff needed for node type inference. Move 'BLR' down withChris Lattner
the rest of the instructions, add comment markers to seperate portions of the file into logical parts git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23277 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-08add patterns for x?oris?Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23268 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-08add patterns to the addi/addis/mulli etc instructions. Define predicatesChris Lattner
for matching signed 16-bit and shifted 16-bit ppc immediates git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23267 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-08Add patterns for some new instructions, allowing the use of the ineg fragment.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23266 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07ignore generated filesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23263 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07Remove some cases handled by the generated portion of the iselChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23262 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07On non-apple systems, when using -march=ppc32, do not print:Chris Lattner
'' is not a recognized processor for this target (ignoring processor) Default to "generic" instead of "" for the default CPU. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23257 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07Print:Chris Lattner
'' is not a recognized processor for this target (ignoring processor) instead of: is not a recognized processor for this target (ignoring processor) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23256 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-06Implement i64<->fp using the fctidz/fcfid instructions on PowerPC when weNate Begeman
are allowed to generate 64-bit-only PowerPC instructions for 32 bit hosts, such as the PowerPC 970. This speeds up 189.lucas from 81.99 to 32.64 seconds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23250 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-06Fix up the AssertXext problem, as well as adding it at callsAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23246 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-06Add note about future optimization noted in the ppc compiler writer's guideNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23245 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-06Add accessor for 64bit flag, so that we can tell when it is safe toNate Begeman
generate the fun in-register fp<->long instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23244 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-04revert part of the last change, should fix regressionsAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23241 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03explicitly specify an operands list for patterns with inputs (e.g. neg)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23240 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03include the dag isel fragmentChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23239 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03ask for a dag iselChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23238 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03Change the isel to not break out of the big giant switch. Instead, theChris Lattner
switch should never be exited, so its bottom is now unreachable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23234 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03rearrange logical ops to group them together more consistently.Chris Lattner
Define the PatFrag class which can be used to define subpatterns to match things with. Define 'not', and use it to define the patterns for andc, nand, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23233 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Add AND/OR/XORChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23232 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Add some initial patterns to simple binary instructions, though theyChris Lattner
currently don't do anything. This elides patterns for binary operators that ping on the carry flag, since we don't model it yet. This patch also removes PPC::SUB, because it is dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23230 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02turn on dag isel by defaultChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23226 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Add help support for -mcpu and -mattr.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23222 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Pull out Lowering in preperation for multiple ISels. Oh, and get rid of ↵Andrew Lenharth
some stuff git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23220 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Decouple fsqrt from gpul optimizations, implementing fsqrt.ll.Chris Lattner
Remove the -enable-gpopt option which is subsumed by feature flags. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23218 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Fix VC++ build errorsJeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23210 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Restore this patch now that the latent bug has been fixedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23209 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Revert the previous patch which causes a mysterious regression in toast.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23207 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Handle any_extend like zextChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23202 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Handle ANY_EXTEND like ZERO_EXTEND. Simplify the extend/truncate code onChris Lattner
the observation that it only has to handle i1 -> i64 and i64 -> i1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23201 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Implement small-arguments.ll:test3 by teaching the DAG optimizer thatChris Lattner
the results of calls to functions returning small values are properly sign/zero extended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23198 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Align functions to 16-byte boundaries, to eliminate noise in performance ↵Chris Lattner
measurements. This improves the performance of 'treeadd' by about 20% with the dag isel, restoring it to the pattern-isel level (which happens to get the alignment right). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23194 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Local labels on darwin apparently start with just 'L', not .L like otherChris Lattner
platforms. This reduces executable size and makes shark realize the actual bounds of functions instead of showing each MBB as a function :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23193 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-011. Use SubtargetFeatures in llc/lli.Jim Laskey
2. Propagate feature "string" to all targets. 3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23192 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01This new class provides support for platform specific "features". The intentJim Laskey
is to manage processor specific attributes from the command line. See examples of use in llc/lli and PowerPCTargetSubtarget. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23191 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Implement dynamic allocas correctly. In particular, because we were copyingChris Lattner
directly out of R1 (without using a CopyFromReg, which uses a chain), multiple allocas were getting CSE'd together, producing bogus code. For this: int %foo(bool %X, int %A, int %B) { br bool %X, label %T, label %F F: %G = alloca int %H = alloca int store int %A, int* %G store int %B, int* %H %R = load int* %G ret int %R T: ret int 0 } We were generating: _foo: stwu r1, -16(r1) stw r31, 4(r1) or r31, r1, r1 stw r1, 12(r31) cmpwi cr0, r3, 0 bne cr0, .LBB_foo_2 ; T .LBB_foo_1: ; F li r2, 16 subf r2, r2, r1 ;; One alloca or r1, r2, r2 or r3, r1, r1 or r1, r2, r2 or r2, r1, r1 stw r4, 0(r3) stw r5, 0(r2) lwz r3, 0(r3) lwz r1, 12(r31) lwz r31, 4(r31) lwz r1, 0(r1) blr .LBB_foo_2: ; T li r3, 0 lwz r1, 12(r31) lwz r31, 4(r31) lwz r1, 0(r1) blr Now we generate: _foo: stwu r1, -16(r1) stw r31, 4(r1) or r31, r1, r1 stw r1, 12(r31) cmpwi cr0, r3, 0 bne cr0, .LBB_foo_2 ; T .LBB_foo_1: ; F or r2, r1, r1 li r3, 16 subf r2, r3, r2 ;; Alloca 1 or r1, r2, r2 or r2, r1, r1 or r6, r1, r1 subf r3, r3, r6 ;; Alloca 2 or r1, r3, r3 or r3, r1, r1 stw r4, 0(r2) stw r5, 0(r3) lwz r3, 0(r2) lwz r1, 12(r31) lwz r31, 4(r31) lwz r1, 0(r1) blr .LBB_foo_2: ; T li r3, 0 lwz r1, 12(r31) lwz r31, 4(r31) lwz r1, 0(r1) blr This fixes Povray and SPASS with the dag isel, the last two failing cases. Tommorow we will hopefully turn it on by default! :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23190 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Fix a bug where we were useing HA to get the high part, which seems like itChris Lattner
could cause a miscompile. Fixing this didn't fix the two programs that fail though. :( This also changes the implementation to follow the pattern selector more closely, causing us to select 0 to li instead of lis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23189 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Do not select the operands being passed into SelectCC. IT does this itselfChris Lattner
and selecting early prevents folding immediates into the cmpw* instructions git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23188 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Move FCTIWZ handling out of the instruction selectors and into legalization,Chris Lattner
getting them out of the business of making stack slots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23180 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Remove dead codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23179 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Move SHL,SHR i64 -> legalizerChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23178 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Remove code that is now dead from the pattern isel.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23177 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31lower sra_parts on the dag, implementing it for the dag isel, and exposingChris Lattner
the ops to dag optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23176 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31add assert zext/sext to the dag iselChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23171 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Handle AssertSext/AssertZext nodes, fixing the regressions last night.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23170 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Enable generation of AssertSext and AssertZext in the PPC backend.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23168 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Fix 'ret long' to return the high and lo parts in the right registers. ThisChris Lattner
fixes crafty and probably others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23167 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-30now that physregs can exist in the same dag with multiple types, remove someChris Lattner
ugly hacks git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23162 91177308-0d34-0410-b5e6-96231b3b80d8
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