Chris Lattner 0b7c0bf249 Generalize this transform, using MaskedValueIsZero, allowing us to compile: ...

struct S { unsigned int i : 6, j : 11, k : 15; } b;
void plus3 (unsigned int x) { b.k += x; }

To:

plus3:
        mov %EAX, DWORD PTR [%ESP + 4]
        shl %EAX, 17
        add DWORD PTR [b], %EAX
        ret

instead of:

plus3:
        mov %EAX, DWORD PTR [%ESP + 4]
        shl %EAX, 17
        mov %ECX, DWORD PTR [b]
        add %EAX, %ECX
        and %EAX, -131072
        and %ECX, 131071
        or %ECX, %EAX
        mov DWORD PTR [b], %ECX
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23384 91177308-0d34-0410-b5e6-96231b3b80d8

2005-09-18 06:02:59 +00:00

..

ADCE.cpp

preserve calling conventions when hacking on code

2005-05-14 12:25:32 +00:00

BasicBlockPlacement.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

CondPropagate.cpp

Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into

2005-08-04 23:24:19 +00:00

ConstantProp.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

CorrelatedExprs.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

DCE.cpp

clean up and modernize this pass.

2005-05-08 18:45:26 +00:00

DeadStoreElimination.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

GCSE.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

IndVarSimplify.cpp

Allow indvar simplify to canonicalize ANY affine IV, not just affine IVs with

2005-08-10 01:12:06 +00:00

InstructionCombining.cpp

Generalize this transform, using MaskedValueIsZero, allowing us to compile:

2005-09-18 06:02:59 +00:00

LICM.cpp

prevent va_arg from being hoisted from a loop

2005-06-20 13:36:33 +00:00

LoopStrengthReduce.cpp

Fix an issue where LSR would miss rewriting a use of an IV expression by a PHI node that is not the original PHI.

2005-09-13 02:09:55 +00:00

LoopUnroll.cpp

Eliminate tabs and trailing spaces

2005-04-23 21:38:35 +00:00

LoopUnswitch.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

LowerConstantExprs.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

LowerGC.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

LowerPacked.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

Makefile

…

PRE.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

Reassociate.cpp

Fix a problem that Dan Berlin noticed, where reassociation would not succeed

2005-09-02 07:07:58 +00:00

ScalarReplAggregates.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

SCCP.cpp

Eliminate tabs and trailing spaces

2005-04-23 21:38:35 +00:00

SimplifyCFG.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

TailDuplication.cpp

Remove trailing whitespace

2005-04-21 23:48:37 +00:00

TailRecursionElimination.cpp

Use the new 'moveBefore' method to simplify some code. Really, which is

2005-08-08 19:11:57 +00:00