Commit graph

14 commits

Author SHA1 Message Date
Robert Griesemer
919d5aee22 cmd/compiler/internal/gc: remove flag argument from fconv (cleanup)
The fconv flag arguments were 0, FmtSharp, and FmtSharp|FmtSign.
The 0 value was used for binary representation only, which was
readily available via Mpflt.String. Otherwise, FmtSharp was always
passed. FmtSign was used to print the '+' sign in case of a positive
number and only needed for complex number formatting. Instead
implemented cconv and handled it there.

Change-Id: I1f77282f995be9cfda05efb71a0e027836a9da26
Reviewed-on: https://go-review.googlesource.com/136195
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2018-09-20 00:06:44 +00:00
Matthew Dempsky
27493187ed cmd/compile: change cmplx{mpy,div} into Mpcplx methods
Passes toolstash-check.

Change-Id: Icae55fe4fa1bb8e4f2f83b7c69e08d30a5559d9e
Reviewed-on: https://go-review.googlesource.com/105047
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2018-04-06 19:25:08 +00:00
Robert Griesemer
bcf2d74ce8 cmd/compile: better errors for float constants with large exponents
Also: Removed misleading comment.

Fixes #20232.

Change-Id: I0b141b1360ac53267b7ebfcec7a2e2a238f3f46c
Reviewed-on: https://go-review.googlesource.com/42930
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-05-08 22:56:10 +00:00
Alberto Donizetti
10a200e560 cmd/compile: diagnose constant division by complex zero
When casting an ideal to complex{64,128}, for example during the
evaluation of

  var a = complex64(0) / 1e-50

we want the compiler to report a division-by-zero error if a divisor
would be zero after the cast.

We already do this for floats; for example

  var b = float32(0) / 1e-50

generates a 'division by zero' error at compile time (because
float32(1e-50) is zero, and the cast is done before performing the
division).

There's no such check in the path for complex{64,128} expressions, and
no cast is performed before the division in the evaluation of

  var a = complex64(0) / 1e-50

which compiles just fine.

This patch changes the convlit1 function so that complex ideals
components (real and imag) are correctly truncated to float{32,64}
when doing an ideal -> complex{64, 128} cast.

Fixes #11674

Change-Id: Ic5f8ee3c8cfe4c3bb0621481792c96511723d151
Reviewed-on: https://go-review.googlesource.com/37891
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2017-04-12 17:29:28 +00:00
Martin Möhrmann
ff3a4ef7ec cmd/compile: reduce reliance on implementation details of Mpint
Change-Id: Ifdc41f6c77c83d22b9ad8811280f1e1db051c781
Reviewed-on: https://go-review.googlesource.com/39951
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2017-04-07 17:08:34 +00:00
Josh Bleecher Snyder
50520f1543 cmd/compile: use Fatalf for more internal errors
There were a surprising number of places
in the tree that used yyerror for failed internal
consistency checks. Switch them to Fatalf.

Updates #15756
Updates #19250

Change-Id: Ie4278148185795a28ff3c27dacffc211cda5bbdd
Reviewed-on: https://go-review.googlesource.com/38153
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-03-14 17:58:38 +00:00
Russ Cox
15040c11b9 cmd/dist: copy needed packages from standard library during bootstrap
This allows use of newer math/big (and later debug/pe)
without maintaining a vendored copy somewhere in cmd.

Use for math/big, deleting cmd/compile/internal/big.

Change-Id: I2bffa7a9ef115015be29fafdb02acc3e7a665d11
Reviewed-on: https://go-review.googlesource.com/31010
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-10-17 15:22:11 +00:00
Alberto Donizetti
01661612e4 cmd/compile: update error messages in Mpint, Mpflt methods
CL 20909 gave Mpint methods nice go-like names, but it
didn't update the names in the error strings. Fix them.

Same for a couple of Mpflt methods.

Change-Id: I9c99653d4b922e32fd5ba18aba768a589a4c7869
Reviewed-on: https://go-review.googlesource.com/30091
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-30 17:32:39 +00:00
Dave Cheney
d7012ca282 cmd/compile/internal/gc: unexport more helper functions
After the removal of the old backend many types are no longer referenced
outside internal/gc. Make these functions private so that tools like
honnef.co/go/unused can spot when they become dead code. In doing so
this CL identified several previously public helpers which are no longer
used, so removes them.

This should be the last of the public functions.

Change-Id: I7e9c4e72f86f391b428b9dddb6f0d516529706c3
Reviewed-on: https://go-review.googlesource.com/29134
Run-TryBot: Dave Cheney <dave@cheney.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-15 13:57:42 +00:00
Dave Cheney
2da642a917 cmd/compile/internal/gc: unexport {J,S,F,H,B,V}conv
Updates #15462

Unexport Jconv, Sconv, Fconv, Hconv, Bconv, and VConv as they are
not referenced outside internal/gc.

Econv was only called by EType.String, so merge it into that method.

Change-Id: Iad9b06078eb513b85a03a43cd9eb9366477643d1
Reviewed-on: https://go-review.googlesource.com/22531
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Dave Cheney <dave@cheney.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-28 01:38:01 +00:00
Robert Griesemer
07749aef98 cmd/compile: special-case const comparisons against zero
Constant comparisons against 0 are reasonably common.
Special-case and avoid allocating a new zero value each time.

Change-Id: I6c526c8ab30ef7f0fef59110133c764b7b90ba05
Reviewed-on: https://go-review.googlesource.com/20956
Reviewed-by: Alan Donovan <adonovan@google.com>
2016-03-21 17:58:21 +00:00
Matthew Dempsky
d3253876f2 cmd/compile: change Mp{int,flt} functions into methods
Also give them more idiomatic Go names. Adding godocs is outside the
scope of this CL. (Besides, the method names almost all directly
parallel an underlying math/big.Int or math/big.Float method.)

CL prepared mechanically with sed (for rewriting mpint.go/mpfloat.go)
and gofmt (for rewriting call sites).

Passes toolstash -cmp.

Change-Id: Id76f4aee476ba740f48db33162463e7978c2083d
Reviewed-on: https://go-review.googlesource.com/20909
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2016-03-21 17:25:50 +00:00
Matthew Dempsky
63142027de cmd: collapse internal/obj/fmt.go into compile/internal/gc/fmt.go
The obj.Fmt* values are only used by gc/fmt.go, so just move them
there. Also, add comments documenting the correspondance between
FmtFoo names and their flag characters to make understanding the
existing documentation slightly less confusing.

While here, add a new FmtFlag named type to represent these values.

Change-Id: I9631214b892557d094823f1ac575d0c43a84007b
Reviewed-on: https://go-review.googlesource.com/20717
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-15 22:08:05 +00:00
Matthew Dempsky
35dd2ed58d cmd/compile: give mparith{2,3}.go files more meaningful names
Also, relocate related const and type definitions from go.go.

Change-Id: Ieb9b672da8dd510ca67022b4f7ae49a778a56579
Reviewed-on: https://go-review.googlesource.com/20080
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Dave Cheney <dave@cheney.net>
Reviewed-by: Keith Randall <khr@golang.org>
2016-03-01 05:03:58 +00:00
Renamed from src/cmd/compile/internal/gc/mparith3.go (Browse further)