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joanlluch d384ad6b63 [TargetLowering][DAGCombine][MSP430] Shift Amount Threshold in DAGCombine (4) 
Summary:
Replaces
```
unsigned getShiftAmountThreshold(EVT VT)
```
by

```
bool shouldAvoidTransformToShift(EVT VT, unsigned amount)
```
thus giving more flexibility for targets to decide whether particular shift amounts must be considered expensive or not.

Updates the MSP430 target with a custom implementation.

This continues  D69116, D69120, D69326 and updates them, so all of them must be committed before this.

Existing tests apply, a few more have been added.

Reviewers: asl, spatel

Reviewed By: spatel

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70042
 		2019-11-13 09:23:08 +01:00
..
2009-05-10-CyclicDAG.ll
…
2009-05-17-Rot.ll
…
2009-05-17-Shift.ll
…
2009-05-19-DoubleSplit.ll
…
2009-08-25-DynamicStackAlloc.ll
…
2009-09-18-AbsoluteAddr.ll
…
2009-10-10-OrImpDef.ll
…
2009-11-08-InvalidResNo.ll
…
2009-11-20-NewNode.ll
…
2009-12-21-FrameAddr.ll [MSP430] Emit a separate section for every interrupt vector 2019-01-16 14:03:41 +00:00
2009-12-22-InlineAsm.ll
…
2010-05-01-CombinerAnd.ll
…
AddrMode-bis-rx.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
AddrMode-bis-xr.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
AddrMode-mov-rx.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
AddrMode-mov-xr.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
BranchSelector.ll
…
DbgValueOtherTargets.test
…
Inst8mi.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst8mm.ll [MSP430] Add missing instruction forms 2019-01-10 22:54:53 +00:00
Inst8mr.ll
…
Inst8ri.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst8rm.ll
…
Inst8rr.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst16mi.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst16mm.ll [MSP430] Add missing instruction forms 2019-01-10 22:54:53 +00:00
Inst16mr.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst16ri.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst16rm.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
Inst16rr.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
InstII.ll [MSP430] Add missing instruction forms 2019-01-10 22:54:53 +00:00
asm-clobbers.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
bit.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
byval.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
callee-saved.ll [MSP430] Add more tests for ABI and calling convention 2018-11-16 09:47:58 +00:00
calls.ll [MSP430] Add more tests for ABI and calling convention 2018-11-16 09:47:58 +00:00
cc_args.ll [DAGCombiner] If a TokenFactor would be merged into its user, consider the user later. 2019-03-13 17:07:09 +00:00
cc_ret.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
flt_rounds.ll
…
fp.ll [MSP430] Emit a separate section for every interrupt vector 2019-01-16 14:03:41 +00:00
hwmult16.ll
…
hwmult32.ll
…
hwmultf5.ll
…
indirectbr.ll
…
indirectbr2.ll
…
inline-asm-absolute-addressing.ll [MSP430] Fix absolute addressing mode printing in AsmPrinter 2019-01-25 09:14:05 +00:00
inline-asm.ll
…
inlineasm-output-template.ll [AsmPrinter] refactor to support %c w/ GlobalAddress' 2019-04-26 18:45:04 +00:00
interrupt.ll [MSP430] Allow msp430_intrcc functions to not have interrupt attribute. 2019-09-25 18:58:07 +00:00
jumptable.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
libcalls.ll [MSP430] Add RTLIB::[SRL/SRA/SHL]_I32 lowering to EABI lib calls 2018-11-16 19:36:15 +00:00
lit.local.cfg [lit] Delete empty lines at the end of lit.local.cfg NFC 2019-06-17 09:51:07 +00:00
memset.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
misched-msp430.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
mult-alt-generic-msp430.ll Enable integrated assembler on MSP430 by default. 2019-02-05 18:01:45 +00:00
postinc.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
promote-i8-mul.ll
…
select-use-sr.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
selectcc.ll [DAGCombiner] add operation legality checks before creating shift ops (PR43542) 2019-10-03 21:34:04 +00:00
setcc.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
shift-amount-threshold-b.ll [TargetLowering][DAGCombine][MSP430] Shift Amount Threshold in DAGCombine (3) 2019-11-11 10:18:25 +01:00
shift-amount-threshold.ll [TargetLowering][DAGCombine][MSP430] Shift Amount Threshold in DAGCombine (4) 2019-11-13 09:23:08 +01:00
shifts.ll [MSP430] Optimize 'shl x, 8[+ N] -> swpb(zext(x)) [<< N]' for i16 2019-01-09 13:03:01 +00:00
spill-to-stack.ll
…
stacksave_restore.ll [MSP430] Fix crash while lowering llvm.stacksave/stackrestore 2019-01-09 12:52:15 +00:00
struct-return.ll [MSP430] Add more tests for ABI and calling convention 2018-11-16 09:47:58 +00:00
struct_layout.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
transient-stack-alignment.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00
umulo-16.ll
…
vararg.ll [MSP430] Add MC layer 2018-11-15 12:29:43 +00:00