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There is no reason to generate different code for cap and len.
Fixes #8025.
Fixes #8026.
LGTM=rsc
R=rsc, iant, khr
CC=golang-codereviews
https://golang.org/cl/93570044
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Also restore the smallintconst case for binary ops.
Fixes #3835.
R=daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6999043
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The patch adds more cases to agenr to allocate registers later,
and makes 6g generate addresses for sgen in something else than
SI and DI. It avoids a complex save/restore sequence that
amounts to allocate a register before descending in subtrees.
Fixes #4207.
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6817080
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Compiling expressions like:
s[s[s[s[s[s[s[s[s[s[s[s[i]]]]]]]]]]]]
make 5g and 6g run out of registers. Such expressions can arise
if a slice is used to represent a permutation and the user wants
to iterate it.
This is due to the usual problem of allocating registers before
going down the expression tree, instead of allocating them in a
postfix way.
The functions cgenr and agenr (that generate a value to a newly
allocated register instead of an existing location), are either
introduced or modified when they already existed to allocate
the new register as late as possible, and sudoaddable is disabled
for OINDEX nodes so that igen/agenr is used instead.
Update #4207.
R=dave, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6733055
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Used to print:
../test/torture.go:116: internal compiler error: bad width: 0463 (../test/torture.go:116) MOVB ,BX (0, 8)
R=nigeltao, rsc
CC=golang-dev
https://golang.org/cl/6736068
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This patch is enough to fix compilation of
exp/types tests but only passes a stripped down
version of the appripriate torture test.
Update #4207.
R=dave, nigeltao, rsc, golang-dev
CC=golang-dev
https://golang.org/cl/6621061
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Fixes #4201.
R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/6622055
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R=golang-dev, dave, daniel.morsing, rsc
CC=golang-dev, remy
https://golang.org/cl/6586072
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