Zia Ansari 4fd5110a5a [X86] - Catch extra combine opportunities for redundant imuls. ...

When we fold "mul ((add x, c1), c1)" -> "add ((mul x, c2), c1*c2)", we bail if (add x, c1) has multiple
users which would result in an extra add instruction.
In such cases, this patch adds a check to see if we can eliminate a multiply instruction in exchange for the extra add.

I also added the capability of doing the existing optimization with non-splatted vectors (splatted also works).

Differential Revision: http://reviews.llvm.org/D13740

llvm-svn: 251028

2015-10-22 16:14:45 +00:00

..

AArch64

[AArch64]Merge halfword loads into a 32-bit load

2015-10-19 18:34:53 +00:00

AMDGPU

AMDGPU: Fix verifier error in SIFoldOperands

2015-10-21 22:37:50 +00:00

ARM

Fix incorrect target triple in fp16-promote.ll

2015-10-22 14:15:00 +00:00

BPF

[bpf] Do not expand UNDEF SDNode during insn selection lowering

2015-10-08 18:52:40 +00:00

CPP

Fix CPP Backend for GEP API changes for opaque pointer types

2015-09-08 18:42:29 +00:00

Generic

[Hexagon] Reverting test file change.

2015-10-17 01:58:51 +00:00

Hexagon

Tail duplication can mix incompatible registers in phi nodes

2015-10-21 02:40:06 +00:00

Inputs

DI: Require subprogram definitions to be distinct

2015-08-28 20:26:49 +00:00

Mips

[mips][mips16] Fix typo in FileCheck directive.

2015-10-22 14:01:52 +00:00

MIR

[mips][mips16] MIPS16 is not a CPU/Architecture but is an ASE.

2015-10-15 14:34:23 +00:00

MSP430

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

2015-03-13 18:20:45 +00:00

NVPTX

[NVPTX] Let NVPTX backend detect integer min and max patterns.

2015-08-26 23:22:02 +00:00

PowerPC

[MachO] Stop generating *coal* sections.

2015-10-15 05:28:38 +00:00

SPARC

Drop assert that a call with struct return goes to a function with sret

2015-10-21 20:05:01 +00:00

SystemZ

Let MachineVerifier be aware of mem-to-mem instructions.

2015-10-21 07:39:47 +00:00

Thumb

[ARM] Modify codegen for memcpy intrinsic to prefer LDM/STM.

2015-10-05 14:49:54 +00:00

Thumb2

[ARM] Use correct half-precision functions in EABI mode

2015-10-07 16:58:49 +00:00

WebAssembly

WebAssembly: fix more syntax

2015-10-22 02:32:50 +00:00

WinEH

[WinEH] Fix eh.exceptionpointer intrinsic lowering

2015-10-17 00:08:08 +00:00

X86

[X86] - Catch extra combine opportunities for redundant imuls.

2015-10-22 16:14:45 +00:00

XCore

[opaque pointer type] Add textual IR support for explicit type parameter for global aliases

2015-09-11 03:22:04 +00:00