Precise bitwise-xor derived result type for all int32 input types.

Precise bitwise-xor derived result type for all int32 input types.

This one is pending too. The type derivation for this and the related patches have been split out into separate functions to speed testing. If the style for one can be settled then I'll update them all.

BUG=

[dougc, 2015-05-13 13:50:42]

dtc-v8@scieneer.com changed reviewers:
+ titzer@chromium.org

[titzer, 2015-05-13 14:44:37]

https://codereview.chromium.org/1112123002/diff/40001/src/compiler/typer.cc
File src/compiler/typer.cc (right):

https://codereview.chromium.org/1112123002/diff/40001/src/compiler/typer.cc#n...
src/compiler/typer.cc:963: uint32_t rmin, uint32_t rmax) {
Maybe pull these methods into a separate file with a separate header, such as
src/compiler/int-ranges.h, and you can define a small struct for the upper/lower
ranges.

[Sven Panne, 2015-05-18 12:16:14]

svenpanne@chromium.org changed reviewers:
+ svenpanne@chromium.org

[Sven Panne, 2015-05-18 12:16:15]

https://codereview.chromium.org/1112123002/diff/40001/test/unittests/compiler...
File test/unittests/compiler/typer-unittest.cc (right):

https://codereview.chromium.org/1112123002/diff/40001/test/unittests/compiler...
test/unittests/compiler/typer-unittest.cc:307:
TestPreciseBinaryArithOp<bit_xor>(JSBitwiseXorIntType,
How long do these tests actually run? 6 nested for loops look scary, see my
comment for the similar shift_right CL.

[titzer, 2016-03-10 10:13:24]

titzer@chromium.org changed reviewers:
- svenpanne@chromium.org, titzer@chromium.org