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CL 28978 (6ec993a) accidentally disabled the test (it would only
run if amd64 AND s390x, whereas it should be amd64 OR s390x).
Change-Id: I23c1ad71724ff55f5808d5896b19b62c8ec5af76
Reviewed-on: https://go-review.googlesource.com/28981
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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The new SSA backend modifies the ABI slightly: R0 is now a usable
general purpose register.
Fixes #16677.
Change-Id: I367435ce921e0c7e79e021c80cf8ef5d1d1466cf
Reviewed-on: https://go-review.googlesource.com/28978
Run-TryBot: Michael Munday <munday@ca.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
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Introduce OrB, EqB, NeqB, AndB to handle bool operations.
Change-Id: I53e4d5125a8090d5eeb4576db619103f19fff58d
Reviewed-on: https://go-review.googlesource.com/22412
Reviewed-by: Keith Randall <khr@golang.org>
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See discussion at [1]. True value must have a fixed non-zero
representation meaning that a && b can be implemented as a & b.
[1] https://groups.google.com/forum/#!topic/golang-dev/xV0vPuFP9Vg
This change helps with m := a && b, but it's more common to see
if a && b { do something } which is not handled.
Change-Id: Ib6f9ff898a0a8c05d12466e2464e4fe781035394
Reviewed-on: https://go-review.googlesource.com/22313
Run-TryBot: Alexandru Moșoi <alexandru@mosoi.ro>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
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func f(a, b bool) bool {
return a || b
}
is now a single instructions (excluding loading and unloading the arguments):
v10 = ORB <bool> v11 v12 : AX
Change-Id: Iff63399410cb46909f4318ea1c3f45a029f4aa5e
Reviewed-on: https://go-review.googlesource.com/21872
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
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* Decreases the generated code slightly.
* Similar to phiopt pass from gcc, except it only handles
booleans. Handling Eq/Neq had no impact on the generated code.
name old time/op new time/op delta
Template 453ms ± 4% 451ms ± 4% ~ (p=0.468 n=24+24)
GoTypes 1.55s ± 1% 1.55s ± 2% ~ (p=0.287 n=24+25)
Compiler 6.53s ± 2% 6.56s ± 1% +0.46% (p=0.050 n=23+23)
MakeBash 45.8s ± 2% 45.7s ± 2% ~ (p=0.866 n=24+25)
name old text-bytes new text-bytes delta
HelloSize 676k ± 0% 676k ± 0% ~ (all samples are equal)
CmdGoSize 8.07M ± 0% 8.07M ± 0% -0.03% (p=0.000 n=25+25)
Change-Id: Ia62477b7554127958a14cb27f85849b095d63663
Reviewed-on: https://go-review.googlesource.com/20090
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Alexandru Moșoi <alexandru@mosoi.ro>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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