Chris Lattner 8e76764de8 add one more bitfield optimization, allowing clang to generate ...

good code on PR4216:

_test_bitfield:                                             ## @test_bitfield
	orl	$32962, %edi
	movl	$4294941946, %eax
	andq	%rdi, %rax
	ret

instead of:

_test_bitfield:
        movl    $4294941696, %ecx
        movl    %edi, %eax
        orl     $194, %edi
        orl     $32768, %eax
        andq    $250, %rdi
        andq    %rax, %rcx
        movq    %rdi, %rax
        orq     %rcx, %rax
        ret

Evan is looking into the remaining andq+imm -> andl optimization.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93147 91177308-0d34-0410-b5e6-96231b3b80d8

2010-01-11 06:55:24 +00:00

..

ABCD

Revert my previous patch to ABCD and fix things the right way. There are two problems addressed

2009-11-09 00:44:44 +00:00

ADCE

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

ArgumentPromotion

Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test

2009-11-03 15:29:06 +00:00

BlockPlacement

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

BranchFolding

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

CodeExtractor

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

CodeGenPrepare

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

ConstantMerge

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

ConstProp

fix PR5978 by peeling the loop so that we avoid shifting the

2010-01-08 19:02:23 +00:00

DeadArgElim

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

DeadStoreElimination

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

FunctionAttrs

Fix a README item: have functionattrs look through selects and

2010-01-06 15:37:47 +00:00

GlobalDCE

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

GlobalOpt

fix a globalopt crash on 'bullet' (handling evaluation of a store

2010-01-07 01:16:21 +00:00

GVN

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

IndVarSimplify

Use WriteAsOperand instead of getName() to print loop header names,

2010-01-09 18:17:45 +00:00

Inline

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

InstCombine

add one more bitfield optimization, allowing clang to generate

2010-01-11 06:55:24 +00:00

Internalize

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

IPConstantProp

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

JumpThreading

fix PR5698

2009-12-06 17:17:23 +00:00

LCSSA

Trim a bunch of unneeded code from this testcase.

2009-11-10 01:33:08 +00:00

LICM

Remove dead debug info intrinsics.

2010-01-05 01:10:40 +00:00

LoopDeletion

Make LoopDeletion check the maximum backedge taken count, rather than the

2009-10-23 17:10:01 +00:00

LoopIndexSplit

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

LoopRotate

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

LoopSimplify

Make Loop::getLoopLatch() work on loops which don't have preheaders, as

2009-11-20 20:51:18 +00:00

LoopStrengthReduce

Use WriteAsOperand instead of getName() to print loop header names,

2010-01-09 18:17:45 +00:00

LoopUnroll

Teach getSmallConstantTripMultiple about Shl operators.

2009-11-20 01:09:34 +00:00

LoopUnswitch

Reverting patch in revision 89758, initial attempt at fixing PR5373 has proven to be bogus.

2009-11-25 05:38:41 +00:00

LowerInvoke

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

LowerSetJmp

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

LowerSwitch

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

Mem2Reg

fix a bug exposed by moving SRoA earlier which caused a crash building kc++

2009-11-02 04:37:17 +00:00

MemCpyOpt

Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test

2009-11-03 15:29:06 +00:00

MergeFunc

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

PruneEH

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

Reassociate

only factor from expressions whose uses are empty and whose

2010-01-09 06:01:36 +00:00

ScalarRepl

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

SCCP

fix a crash in SCCP handling extractvalue of an array, pointed out and

2009-11-10 22:02:09 +00:00

SimplifyCFG

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

SimplifyLibCalls

move an optimization for memcmp out of simplifylibcalls and into

2009-12-24 00:37:38 +00:00

SRETPromotion

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

SSI

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00

StripSymbols

Update test.

2009-09-09 02:41:50 +00:00

TailCallElim

Delete useless trailing semicolons.

2010-01-05 17:55:26 +00:00

TailDup

Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

2009-09-11 18:01:28 +00:00