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* - Add TargetInstrInfo::getOperandLatency() to compute operand latencies. ThisEvan Cheng2010-10-061-1/+1
| | | | | | | | | | | | | | allow target to correctly compute latency for cases where static scheduling itineraries isn't sufficient. e.g. variable_ops instructions such as ARM::ldm. This also allows target without scheduling itineraries to compute operand latencies. e.g. X86 can return (approximated) latencies for high latency instructions such as division. - Compute operand latencies for those defined by load multiple instructions, e.g. ldm and those used by store multiple instructions, e.g. stm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115755 91177308-0d34-0410-b5e6-96231b3b80d8
* Consider this code snippet:Bill Wendling2010-08-111-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | float t1(int argc) { return (argc == 1123) ? 1.234f : 2.38213f; } We would generate truly awful code on ARM (those with a weak stomach should look away): _t1: movw r1, #1123 movs r2, #1 movs r3, #0 cmp r0, r1 mov.w r0, #0 it eq moveq r0, r2 movs r1, #4 cmp r0, #0 it ne movne r3, r1 adr r0, #LCPI1_0 ldr r0, [r0, r3] bx lr The problem was that legalization was creating a cascade of SELECT_CC nodes, for for the comparison of "argc == 1123" which was fed into a SELECT node for the ?: statement which was itself converted to a SELECT_CC node. This is because the ARM back-end doesn't have custom lowering for SELECT nodes, so it used the default "Expand". I added a fairly simple "LowerSELECT" to the ARM back-end. It takes care of this testcase, but can obviously be expanded to include more cases. Now we generate this, which looks optimal to me: _t1: movw r1, #1123 movs r2, #0 cmp r0, r1 adr r0, #LCPI0_0 it eq moveq r2, #4 ldr r0, [r0, r2] bx lr .align 2 LCPI0_0: .long 1075344593 @ float 2.382130e+00 .long 1067316150 @ float 1.234000e+00 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110799 91177308-0d34-0410-b5e6-96231b3b80d8
* Use Unified Assembly Syntax for the ARM backend.Jim Grosbach2009-11-091-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86494 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert some ARM tests with lots of greps to use FileCheck.Bob Wilson2009-10-091-8/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83651 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate more uses of llvm-as and llvm-dis.Dan Gohman2009-09-091-7/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81293 91177308-0d34-0410-b5e6-96231b3b80d8
* Move thumb and thumb2 tests into separate directories.Evan Cheng2009-06-241-7/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74068 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert tests using "| wc -l | grep ..." to use the count script.Dan Gohman2007-08-151-13/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41097 91177308-0d34-0410-b5e6-96231b3b80d8
* For PR1319: Upgrade to use new test harnessReid Spencer2007-04-151-14/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36076 91177308-0d34-0410-b5e6-96231b3b80d8
* -march=arm -enable-thumb => -march=thumbEvan Cheng2007-02-231-7/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34522 91177308-0d34-0410-b5e6-96231b3b80d8
* For PR761:Reid Spencer2007-01-261-7/+7
| | | | | | | | | | | | | | | Remove "target endian/pointersize" or add "target datalayout" to make the test parse properly or set the datalayout because defaults changes. For PR645: Make global names use the @ prefix. For llvm-upgrade changes: Fix test cases or completely remove use of llvm-upgrade for test cases that cannot survive the new renaming or upgrade capabilities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33533 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM test cases contributed by Apple.Evan Cheng2007-01-191-31/+45
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33354 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the llvm-upgrade program to upgrade llvm assembly.Reid Spencer2006-12-021-7/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32115 91177308-0d34-0410-b5e6-96231b3b80d8
* more condition codesRafael Espindola2006-09-211-2/+43
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30567 91177308-0d34-0410-b5e6-96231b3b80d8
* fix select.ll to always test a select nodeRafael Espindola2006-09-081-11/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30187 91177308-0d34-0410-b5e6-96231b3b80d8
* implement unconditional branchesRafael Espindola2006-09-081-1/+0
| | | | | | | fix select.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30186 91177308-0d34-0410-b5e6-96231b3b80d8
* This failsChris Lattner2006-09-071-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30148 91177308-0d34-0410-b5e6-96231b3b80d8
* run llc with -march=arm in select.llRafael Espindola2006-08-221-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29821 91177308-0d34-0410-b5e6-96231b3b80d8
* This passes.Chris Lattner2006-08-221-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29813 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the correct syntax.Reid Spencer2006-08-221-2/+2
| | | | | | | Note to self: test before committing things! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29810 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a simple RUN line so this doesn't always fail. XFAIL this untilReid Spencer2006-08-221-0/+2
| | | | | | | Rafael can get a chance to fix it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29809 91177308-0d34-0410-b5e6-96231b3b80d8
* initial support for selectRafael Espindola2006-08-211-0/+15
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29802 91177308-0d34-0410-b5e6-96231b3b80d8
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