delta/go-git.git/src/cmd/internal/obj/mips, branch dev.inline

[dev.inline] cmd/internal/obj: rename Prog.Lineno to Prog.Pos

2016-12-09T20:35:56+00:00

Change-Id: I7585d85907869f5a286b36936dfd035f1e8e9906
Reviewed-on: https://go-review.googlesource.com/34197
Run-TryBot: David Lazar 
TryBot-Result: Gobot Gobot 
Reviewed-by: Austin Clements

cmd/internal/obj/mips: add support for GOARCH=mips{,le}

2016-11-08T17:46:35+00:00

Implements subset of MIPS32(r1) instruction set.

Change-Id: Iba017350f6c2763de05d4d1bc2f123e8eb76d0ff
Reviewed-on: https://go-review.googlesource.com/31475
Run-TryBot: Brad Fitzpatrick 
Reviewed-by: Brad Fitzpatrick 
Reviewed-by: Cherry Zhang

cmd/internal/obj/mips: materialize float constant 0 from zero register

2016-10-28T14:20:09+00:00

Materialize float constant 0 from integer zero register, instead
of loading from constant pool.

Change-Id: Ie4728895b9d617bec2a29d15729c0efaa10eedbb
Reviewed-on: https://go-review.googlesource.com/32109
Run-TryBot: Cherry Zhang 
TryBot-Result: Gobot Gobot 
Reviewed-by: David Chase

cmd/internal/obj: Use bitfield for LSym attributes

2016-10-25T20:10:05+00:00

Reduces the size of LSym struct.

On 32bit: before 84  after 76
On 64bit: before 136 after 128

name       old time/op     new time/op     delta
Template       182ms ± 3%      182ms ± 3%    ~           (p=0.607 n=19+20)
Unicode       93.5ms ± 4%     94.2ms ± 3%    ~           (p=0.141 n=20+19)
GoTypes        608ms ± 1%      605ms ± 2%    ~           (p=0.056 n=20+20)

name       old user-ns/op  new user-ns/op  delta
Template        249M ± 7%       249M ± 4%    ~           (p=0.605 n=18+19)
Unicode         149M ±14%       151M ± 5%    ~           (p=0.724 n=20+17)
GoTypes         855M ± 4%       853M ± 3%    ~           (p=0.537 n=19+19)

name       old alloc/op    new alloc/op    delta
Template      40.3MB ± 0%     40.3MB ± 0%  -0.11%        (p=0.000 n=19+20)
Unicode       33.8MB ± 0%     33.8MB ± 0%  -0.08%        (p=0.000 n=20+20)
GoTypes        119MB ± 0%      119MB ± 0%  -0.10%        (p=0.000 n=19+20)

name       old allocs/op   new allocs/op   delta
Template        383k ± 0%       383k ± 0%    ~           (p=0.703 n=20+20)
Unicode         317k ± 0%       317k ± 0%    ~           (p=0.982 n=19+18)
GoTypes        1.14M ± 0%      1.14M ± 0%    ~           (p=0.086 n=20+20)

Change-Id: Id6ba0db3ecc4503a4e9af3ed0d5884d4366e8bf9
Reviewed-on: https://go-review.googlesource.com/31870
Reviewed-by: David Crawshaw 
Run-TryBot: Shahar Kohanim 
TryBot-Result: Gobot Gobot

cmd/internal/obj/mips: store LR before update SP in function prologue

2016-10-24T22:39:15+00:00

This prevents the traceback code from seeing a half-updated
stack frame when a profiling signal comes during the execution
of function prologue. Also fixes mips64x part of #17381.

Change-Id: Iec9683427e546e3648b2e8b1dde956d13f6eb938
Reviewed-on: https://go-review.googlesource.com/31721
Run-TryBot: Cherry Zhang 
TryBot-Result: Gobot Gobot 
Reviewed-by: Austin Clements

cmd/link, cmd/internal/obj: stop exporting various names

2016-10-19T21:16:58+00:00

Just happened to notice that these names (funcAlign and friends) are
never referenced outside their package, so no need to export them.

Change-Id: I4bbdaa4b0ef330c3c3ef50a2ca39593977a83545
Reviewed-on: https://go-review.googlesource.com/31496
Run-TryBot: Ian Lance Taylor 
TryBot-Result: Gobot Gobot 
Reviewed-by: David Crawshaw

cmd/compile, runtime, etc: get rid of constant FP registers

2016-08-30T23:16:17+00:00

On ARM64, MIPS64, and PPC64, some floating point registers were
reserved for constants 0, 1, 2, 0.5, etc. This CL removes them.

On ARM64, they are never used. On MIPS64 and PPC64, the only use
case is a multiplication-by-2 in the old backend of the compiler,
which is replaced with an addition.

Change-Id: I737cbf43283756e3408964fc88c567a938c57036
Reviewed-on: https://go-review.googlesource.com/28095
Run-TryBot: Cherry Zhang 
Reviewed-by: David Chase 
TryBot-Result: Gobot Gobot

cmd/compile: get MIPS64 SSA working

2016-08-25T12:53:36+00:00

- implement *, /, %, shifts, Zero, Move.
- fix mistakes in comparison.
- fix floating point rounding.
- handle RetJmp in assembler (which was not handled, as a consequence
  Duff's device was disabled in the old backend.)

all.bash now passes with SSA on.

Updates #16359.

Change-Id: Ia14eed0ed1176b5d800592080c8f53dded7fe73f
Reviewed-on: https://go-review.googlesource.com/27592
Reviewed-by: David Chase 
Run-TryBot: Cherry Zhang 
TryBot-Result: Gobot Gobot

cmd/link/internal, cmd/internal/obj: introduce ctxt.Logf

2016-08-25T03:34:06+00:00

Replace the various calls to Fprintf(ctxt.Bso, ...) with a helper,
ctxt.Logf. This also addresses the various inconsistent flushing of
ctxt.Bso.

Because we have two Link structures, add Link.Logf in both places.

Change-Id: I23093f9b9b3bf33089a0ffd7f815f92dcd1a1fa1
Reviewed-on: https://go-review.googlesource.com/27730
Reviewed-by: Matthew Dempsky

cmd/internal/*: only call ctx.Bso.Flush when something has been written

2016-08-25T01:31:17+00:00

In many places where ctx.Bso.Flush is used as the target for some debug
logging, ctx.Bso.Flush is called unconditionally. In the majority of
cases where debug logging is not enabled, this means Flush is called
many times when there is nothing to be flushed (it will be called anyway
when ctx.Bso is eventually closed), sometimes in a loop.

Avoid this by moving the ctx.Bso.Flush call into the same condition
block as the debug print. This pattern was previously applied
sporadically.

Change-Id: I0444cb235cc8b9bac51a59b2e44e59872db2be06
Reviewed-on: https://go-review.googlesource.com/27579
Run-TryBot: Dave Cheney 
TryBot-Result: Gobot Gobot 
Reviewed-by: David Crawshaw 
Reviewed-by: Matthew Dempsky