James Molloy 3fdcf4e64c [LSR] Don't try and create post-inc expressions on non-rotated loops ... If a loop is not rotated (for example when optimizing for size), the latch is not the backedge. If we promote an expression to post-inc form, we not only increase register pressure and add a COPY for that IV expression but for all IVs! Motivating testcase: void f(float *a, float *b, float *c, int n) { while (n-- > 0) *c++ = *a++ + *b++; } It's imperative that the pointer increments be located in the latch block and not the header block; if not, we cannot use post-increment loads and stores and we have to keep both the post-inc and pre-inc values around until the end of the latch which bloats register usage. llvm-svn: 278658		2016-08-15 07:53:03 +00:00
..
AArch64	Reapply [LSR] Create fewer redundant instructions.	2016-06-06 19:10:46 +00:00
AMDGPU	AMDGPU: Run pointer optimization passes	2016-06-15 00:11:01 +00:00
ARM	[ARM][NEON] Use address space in vld([1234]|[234]lane) and vst([1234]|[234]lane) instructions	2015-09-30 10:56:37 +00:00
NVPTX	[NVPTX] truncating 64-bit to 32-bit is free	2015-08-20 20:59:02 +00:00
X86	[SCEV] Update interface to handle SCEVExpander insert point motion.	2016-08-11 21:05:17 +00:00
2005-08-15-AddRecIV.ll
2005-08-17-OutOfLoopVariant.ll
2005-09-12-UsesOutOutsideOfLoop.ll
2007-04-23-UseIterator.ll
2008-08-13-CmpStride.ll
2008-09-09-Overflow.ll
2009-01-13-nonconstant-stride-outside-loop.ll
2009-04-28-no-reduce-mul.ll
2011-07-19-CritEdgeBreakCrash.ll
2011-10-03-CritEdgeMerge.ll
2011-10-06-ReusePhi.ll	[LSR] canonicalize Prod*(1<<C) to Prod<<C	2015-06-24 19:28:40 +00:00
2011-10-13-SCEVChain.ll
2011-10-14-IntPtr.ll
2011-12-19-PostincQuadratic.ll
2012-01-02-nopreheader.ll
2012-01-16-nopreheader.ll
2012-03-15-nopreheader.ll
2012-03-26-constexpr.ll
2012-07-13-ExpandUDiv.ll
2012-07-18-LimitReassociate.ll
2013-01-05-IndBr.ll
2013-01-14-ReuseCast.ll
addrec-gep-address-space.ll
addrec-gep.ll
address-space-loop.ll
count-to-zero.ll
dead-phi.ll
different-type-ivs.ll
dominate-assert.ll	Move the personality function from LandingPadInst to Function	2015-06-17 20:52:32 +00:00
dont_insert_redundant_ops.ll
dont_reduce_bytes.ll
dont_reverse.ll
dont-hoist-simple-loop-constants.ll
ephemeral.ll	[LSR] don't attempt to promote ephemeral values to indvars	2015-07-13 03:28:53 +00:00
exit_compare_live_range.ll
funclet.ll	[LoopStrengthReduce] Don't rewrite PHIs with incoming values from CatchSwitches	2016-02-03 21:30:34 +00:00
hoist-parent-preheader.ll
invariant_value_first_arg.ll
invariant_value_first.ll
ivchain.ll	[PM] Convert Loop Strength Reduce pass to new PM	2016-07-18 21:41:50 +00:00
lsr-expand-quadratic.ll
negative-scale.ll
nested-reduce.ll
nonlinear-postinc.ll
ops_after_indvar.ll
phi_node_update_multiple_preds.ll
post-inc-icmpzero.ll	[SCEV] Try to reuse existing value during SCEV expansion	2016-02-04 01:27:38 +00:00
post-inc-optsize.ll	[LSR] Don't try and create post-inc expressions on non-rotated loops	2016-08-15 07:53:03 +00:00
pr2537.ll
pr2570.ll
pr3086.ll
pr3399.ll
pr3571.ll
pr12018.ll	DI: Require subprogram definitions to be distinct	2015-08-28 20:26:49 +00:00
pr12048.ll
pr12691.ll
pr18165.ll
pr25541.ll	[IR] Reformulate LLVM's EH funclet IR	2015-12-12 05:38:55 +00:00
pr27056.ll	[LoopStrengthReduce] Don't hoist into a catchswitch	2016-03-24 21:40:22 +00:00
preserve-gep-loop-variant.ll
quadradic-exit-value.ll	[PM] Significantly refactor the pass pipeline parsing to be easier to	2016-08-03 03:21:41 +00:00
related_indvars.ll
remove_indvar.ll
scaling_factor_cost_crash.ll
scev-insertpt-bug.ll	Reapply [LSR] Create fewer redundant instructions.	2016-06-06 19:10:46 +00:00
sext-ind-var.ll	[SCEV] Apply NSW and NUW flags via poison value analysis for sub, mul and shl	2015-08-14 22:45:26 +00:00
share_code_in_preheader.ll
share_ivs.ll
shl.ll	[LSR] canonicalize Prod*(1<<C) to Prod<<C	2015-06-24 19:28:40 +00:00
uglygep-address-space.ll
uglygep.ll
use_postinc_value_outside_loop.ll
var_stride_used_by_compare.ll
variable_stride.ll