Implicit operands no longer get a free pass: Imp-use requires a live register
and imp-def requires a dead register.

There is also no special rule allowing redefinition of a sub-register when the
super-register is live. The super register must have imp-kill+imp-def operands
instead.

llvm-svn: 78090

The only exception is CC.

llvm-svn: 78089

llvm-svn: 78086

llvm-svn: 78085

llvm-svn: 78082

Initial support for single-precision FP using NEON. Added "neonfp" attribute to enable. Added patterns for some binary FP operations.

llvm-svn: 78081

killed by another operand.

There is probably a better fix. Either 1) scavenger can look at other operands, or
2) livevariables can be smarter about kill markers. Patches welcome.

llvm-svn: 78072

llvm-svn: 78070

__TEXT,__ustring section on darwin.

llvm-svn: 78068

it is just being used as a prefix, so forward substitute it directly.

llvm-svn: 78067

section on ELF targets.

llvm-svn: 78066

llvm-svn: 78060

llvm-svn: 78059

llvm-svn: 78057

This fixes PR4666.

llvm-svn: 78056

add new concrete versions for 1/2/4-byte mergable strings.

These are not actually created yet.

llvm-svn: 78055

llvm-svn: 78053

around in a tree I forgot about.

llvm-svn: 78048

llvm-svn: 78047

llvm-svn: 78043

llvm-svn: 78035

llvm-svn: 78034

Constants and Metadata share ValueList. This means they must be emitted interleaved (using appropriate BLOCK_IDs) otherwise ValuePtrs index gets out of sync.

llvm-svn: 78033

Remove ARM specific getInlineAsmLength. We'll rely on the simpler (and faster) generic algorithm for now. If more accurate computation is needed, we'll rely on the disassembler.

llvm-svn: 78032

llvm-svn: 78031

Emit sub r, #c instead of transforming it to add r, #-c if c fits in 8-bit. This is a bit of pre-mature optimization. 8-bit variant makes it likely it will be narrowed to a 16-bit instruction.

llvm-svn: 78030

results to fixed registers.

llvm-svn: 78025

llvm-svn: 78024

TLI.computeMaskedBitsForTargetNode from ComputeMaskedBits, since
the former may call back into the latter. This fixes a major
compile time problem on a testcase that happnened to hit this
in a particularly bad way, PR4643.

llvm-svn: 78023

llvm-svn: 78020

eliminate IsInTextSection.

llvm-svn: 78017

llvm-svn: 78015

llvm-svn: 78014

llvm-svn: 78013

llvm-svn: 78012

replicating the logic manually.

llvm-svn: 78011

textual sections.

llvm-svn: 78007

llvm-svn: 78006

few places in InstCombine to use it, to fix problems handling pointer
types. This fixes the recent llvm-gcc bootstrap error.

llvm-svn: 78005

hey it uses .previous, so it should work :)

llvm-svn: 78004