Chris Lattner c70b0c0ee7 optimize bitcasts from large integers to vector into vector ... element insertion from the pieces that feed into the vector. This handles a pattern that occurs frequently due to code generated for the x86-64 abi. We now compile something like this: struct S { float A, B, C, D; }; struct S g; struct S bar() { struct S A = g; ++A.A; ++A.C; return A; } into all nice vector operations: _bar: ## @bar ## BB#0: ## %entry movq _g@GOTPCREL(%rip), %rax movss LCPI1_0(%rip), %xmm1 movss (%rax), %xmm0 addss %xmm1, %xmm0 pshufd $16, %xmm0, %xmm0 movss 4(%rax), %xmm2 movss 12(%rax), %xmm3 pshufd $16, %xmm2, %xmm2 unpcklps %xmm2, %xmm0 addss 8(%rax), %xmm1 pshufd $16, %xmm1, %xmm1 pshufd $16, %xmm3, %xmm2 unpcklps %xmm2, %xmm1 ret instead of icky integer operations: _bar: ## @bar movq _g@GOTPCREL(%rip), %rax movss LCPI1_0(%rip), %xmm1 movss (%rax), %xmm0 addss %xmm1, %xmm0 movd %xmm0, %ecx movl 4(%rax), %edx movl 12(%rax), %esi shlq $32, %rdx addq %rcx, %rdx movd %rdx, %xmm0 addss 8(%rax), %xmm1 movd %xmm1, %eax shlq $32, %rsi addq %rax, %rsi movd %rsi, %xmm1 ret This resolves rdar://8360454 llvm-svn: 112343		2010-08-28 01:20:38 +00:00
..
ABCD
ADCE
ArgumentPromotion	Fix rdar://7879828 - crash in CallGraph, a self host issue.	2010-04-20 00:46:50 +00:00
BlockPlacement
BranchFolding
CodeExtractor
CodeGenPrepare
ConstantMerge
ConstProp
DeadArgElim	Preserve debug info attached with call instruction while eliminating dead argument.	2010-04-30 20:23:54 +00:00
DeadStoreElimination	add newlines at the end of files.	2010-04-07 22:53:17 +00:00
FunctionAttrs
GlobalDCE
GlobalOpt	Use llvm.foo as the intrinsic, rather than llvm.dbg.value. Since the	2010-05-04 20:09:25 +00:00
GVN	Remove arm_apcscc from the test files. It is the default and doing this	2010-06-17 15:18:27 +00:00
IndVarSimplify	Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable	2010-07-26 18:28:14 +00:00
Inline	Fix PR7272: when inlining through a callsite with byval arguments,	2010-05-31 21:00:26 +00:00
InstCombine	optimize bitcasts from large integers to vector into vector	2010-08-28 01:20:38 +00:00
Internalize
IPConstantProp
JumpThreading	Use LVI to eliminate conditional branches where we've tested a related condition previously. Update tests for this change.	2010-08-27 17:12:29 +00:00
LCSSA	Avoid depending on LCSSA implicitly pulling in LoopSimplify.	2010-07-26 18:00:43 +00:00
LICM
LoopDeletion
LoopIndexSplit	Check for side effects before splitting loop.	2010-05-03 18:06:58 +00:00
LoopRotate	When rotating loops, put the original header at the bottom of the	2010-08-17 17:39:21 +00:00
LoopSimplify	LoopSimplify shouldn't split loop backedges that use indirectbr. PR7867.	2010-08-14 00:43:09 +00:00
LoopStrengthReduce	Move x86-specific tests out of test/Transforms/LoopStrengthReduce and	2010-08-05 17:04:15 +00:00
LoopUnroll
LoopUnswitch	Remove arm_apcscc from the test files. It is the default and doing this	2010-06-17 15:18:27 +00:00
LowerAtomic	Add an atomic lowering pass	2010-08-03 16:19:16 +00:00
LowerInvoke
LowerSetJmp
LowerSwitch
Mem2Reg	Copy location info for current function argument from dbg.declare if respective store instruction does not have any location info.	2010-06-04 22:27:30 +00:00
MemCpyOpt	Reapply address space patch after fixing an issue in MemCopyOptimizer.	2010-04-04 03:10:48 +00:00
MergeFunc	Arrays and vectors with different numbers of elements are not equivalent.	2010-07-16 06:31:12 +00:00
PartialSpecialize	Fixed and reactivated a partial specialization test	2010-08-19 12:42:38 +00:00
PruneEH	fix some failures my callgraph dump format change broke.	2010-04-23 18:38:40 +00:00
Reassociate
ScalarRepl	Fix the second half of PR7437: scalarrepl wasn't preserving	2010-07-08 00:27:05 +00:00
SCCP	fix PR7876: If ipsccp decides that a function's address is taken	2010-08-12 22:25:23 +00:00
SimplifyCFG	Instead, teach SimplifyCFG to trim non-address-taken blocks from	2010-08-16 14:41:14 +00:00
SimplifyLibCalls	Make sure that simplify libcalls does not replace a call with one calling	2010-06-16 19:34:01 +00:00
Sink	Add an LLVM IR version of code sinking. This uses the same simple algorithm	2010-05-07 15:40:13 +00:00
SRETPromotion
SSI
StripSymbols	DIGlobalVariable can be used to encode debug info for globals that are directly folded into a constant by FE.	2010-08-25 18:52:02 +00:00
TailCallElim	Handle the case of a tail recursion in which the tail call is followed	2010-07-13 15:41:41 +00:00
TailDup
ValuePropagation	Add a prototype of a new peephole optimizing pass that uses LazyValue info to simplify PHIs and select's.	2010-08-27 23:31:36 +00:00