mlugg
407dc6eee4
Liveness: avoid emitting unused instructions or marking their operands as used
...
Backends want to avoid emitting unused instructions which do not have
side effects: to that end, they all have `Liveness.isUnused` checks for
many instructions. However, checking this in the backends avoids a lot
of potential optimizations. For instance, if a nested field is loaded,
then the first field access would still be emitted, since its result is
used by the next access (which is then unreferenced).
To elide more instructions, Liveness can track this data instead. For
operands which do not have to be lowered (i.e. are not side effecting
and are not something special like `arg), Liveness can ignore their
operand usages, and push the unused information further up, potentially
marking many more instructions as unreferenced.
In doing this, I also uncovered a bug in the LLVM backend relating to
discarding the result of `@cVaArg`, which this change fixes. A behaviour
test has been added to cover it.
2023-04-20 20:28:48 +01:00
mlugg
d5f1a8823e
Sema: allow ptr field access on pointer-to-array
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Also remove an incorrect piece of logic which allowed fetching the 'len'
property on non-single-ptrs (e.g. many-ptrs) and add a corresponding
compile error test case.
Resolves : #4765
2023-04-20 09:05:22 -07:00
Jacob Young
780f654e19
behavior: disable flaky test on x86_64
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Also reenable stage2_x86_64 windows behavior tests in case it is failing
for the same reason.
Closes #15324
2023-04-16 17:07:07 -04:00
Jacob Young
c1a2da6b78
x86_64: implement packed load and store
2023-04-16 17:05:35 -04:00
Andrew Kelley
e9d854743a
disable more failing C backend tests
2023-04-15 10:33:08 -07:00
Andrew Kelley
a281d29881
disable not-yet-passing C backend tests
2023-04-15 10:33:08 -07:00
Andrew Kelley
4a233d1871
CI: more C backend test coverage
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The CI now runs C backend tests in addition to compiling them. It uses
-std=c99 -pedantic -Werror in order to catch non-conformant C code.
This necessitated disabling a test case that caused a C compile error,
in addition to disabling a handful of warnings that are already being
triggered by Zig's C backend output for the behavior tests.
The upshot is that I was able to, very cleanly, integrate the C backend
tests into the build system, so that it communicates via the test runner
protocol along with all the other behavior tests.
2023-04-15 10:33:08 -07:00
Luuk de Gram
25e3851fe0
Merge pull request #15257 from Luukdegram/wasm-tagname
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wasm: Implement `@tagName` instruction
2023-04-13 19:32:22 +02:00
Jacob Young
caa3d6a4f4
x86_64: fix constant pointers to zero-bit types
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These non-dereferencable pointers still need to have the correct
alignment and non-null-ness.
2023-04-13 04:17:47 -04:00
Jacob Young
3b22ce8264
x86_64: fix atomic loop implementation
2023-04-13 04:17:47 -04:00
Jacob Young
0165187cd0
x86_64: fix some of the mass confusion about the meaning of MCValue
2023-04-13 04:17:47 -04:00
Luuk de Gram
abc1e52e08
wasm: enable @tagName behavior tests
2023-04-12 22:23:36 +02:00
mlugg
ccf670c2b0
Zir: implement explicit block_comptime instruction
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Resolves : #7056
2023-04-12 12:06:19 -04:00
Andrew Kelley
a2793f8ab8
Merge pull request #14853 from schmee/vector-peer-type-resolution
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Vector type resolution/coercion fixes
2023-04-10 12:21:55 -04:00
Auguste Rame
7225a15abe
Enable new tests
2023-04-07 20:55:04 -04:00
Luuk de Gram
4ebf483e0d
Merge pull request #14668 from Techatrix/wasm-floatops
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wasm: implement float operations with compiler-rt
2023-04-07 18:22:41 +02:00
mlugg
1059b57898
Liveness: defer deaths of externally-scoped instructions in loop bodies
2023-04-07 01:29:20 +01:00
Veikka Tuominen
82a6acca93
Sema: implement inline switch capture at comptime
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Closes #15157
2023-04-05 14:45:56 +03:00
Jacob Young
821eb595f4
x86_64: implement cmp_lt_errors_len
2023-04-03 15:19:07 -04:00
Jacob Young
5900dc0580
x86_64: fix typos
2023-04-03 18:02:55 +02:00
Jacob Young
1980f5479b
x86_64: implement store to immediate address
2023-04-03 17:45:16 +02:00
Jacob Young
272acb7ee5
x86_64: implement storing large immediates
2023-04-03 17:45:16 +02:00
Jacob Young
f4b411314c
Sema: defer stores to inferred allocs
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This lets us generate the store with knowledge of the type to be stored.
Therefore, we can avoid generating garbage Air with stores through
pointers to comptime-only types which backends cannot lower.
Closes #13410
Closes #15122
2023-04-02 18:05:44 +03:00
Jacob Young
f4359531b1
x86_64: implement shl with overflow
2023-04-02 06:11:12 -04:00
Jacob Young
0e289cc826
x86_64: implement large add/sub with overflow
2023-04-02 05:16:46 -04:00
Jacob Young
b80cdde4f0
x86_64: implement struct_field_val for large packed structs
2023-04-02 04:49:53 -04:00
Jacob Young
83a208c355
x86_64: implement large cmp
2023-04-02 04:49:53 -04:00
Jacob Young
677427bc3a
x86_64: implement error name
2023-04-02 04:49:53 -04:00
Jacob Young
ac68d72d24
x86_64: implement aggregate init of a packed struct
2023-04-02 04:49:53 -04:00
Jacob Young
0543def52f
llvm: fix crashes when loading a struct field
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The result of buildStructGEP is not always a GEP (sorry), so we can't
use getGEPResultElementType on it.
Closes #14641
2023-03-30 11:54:24 +03:00
Jacob Young
dd66e0addb
Sema: fix empty slice pointer value
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We just checked that inst_child_ty was effectively a zero-bit type, so
it is certainly not the non-zero alignment we are looking for.
Closes #15085
2023-03-28 23:12:19 +03:00
Jacob Young
802c2e4fae
x86_64: fix popcnt and disable regressed test
2023-03-27 05:58:00 -04:00
Techatrix
8ec7723992
wasm: implement float operations with compiler-rt
2023-03-26 22:48:56 +02:00
Jacob Young
1e080e5056
x86_64: implement atomic loops
2023-03-25 16:23:55 -04:00
Jacob Young
6d9bdc8733
x86_64: fix cmpxchg
2023-03-25 16:23:55 -04:00
Jacob Young
8f385e77ca
x86_64: implement struct_field_val for packed containers
2023-03-25 16:23:55 -04:00
Jacob Young
0cfc0d0d13
x86_64: implement struct_field_ptr for packed containers
2023-03-25 16:23:55 -04:00
Jacob Young
935ec9ec6a
x86_64: canonicalize each br of a block
2023-03-24 17:57:58 -04:00
Jacob Young
12c07fcf20
x86_64: fix more value tracking bugs
2023-03-24 17:57:58 -04:00
Jacob Young
dbe1b4a7e5
x86_64: fix value tracking bugs
2023-03-24 17:57:58 -04:00
mlugg
f9b5829508
Sema: implement @export for arbitrary values
2023-03-21 15:04:39 +02:00
Xavier Bouchoux
898e4473e8
CBE: implement aggregateInit() for array of array case.
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fixes `error(compilation): clang failed with stderr: error: array type 'uint32_t[10]' (aka 'unsigned int[10]') is not assignable`
2023-03-21 14:56:04 +02:00
Veikka Tuominen
f7204c7f37
Merge pull request #15028 from Vexu/compile-errors
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Sema: improve error message of field access of wrapped type
2023-03-21 14:55:36 +02:00
Jacob Young
f316cb29cc
x86_64: implement atomic and fence ops
2023-03-21 08:49:54 +01:00
Jacob Young
3f4569bf18
codegen: fix backend breakage due to optional layout change
2023-03-21 08:49:54 +01:00
Jacob Young
f95faac5ae
x86_64: (re)implement optional ops
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Note that this commit also changes the layout of optional for all
other backends using `src/codegen.zig` without updating them!
2023-03-21 08:49:54 +01:00
Jacob Young
24f0900ecb
x86_64: implement some error union ops
2023-03-21 08:49:54 +01:00
Jacob Young
80427796df
x86_64: implement @returnAddress and @frameAddress
2023-03-21 08:49:54 +01:00
Jacob Young
30e1daa746
x86_64: implement basic float ops
2023-03-21 08:49:54 +01:00
Veikka Tuominen
e70a0b2a6b
Value: implement reinterpreting enum field index as integer
...
Closes #15019
2023-03-21 03:31:03 +02:00
