George Koehler
3bb41d3910
Switch flt_mantissa fields from long to uint32_t.
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This seems to fix an error when flt_arith converts a literal
double-precision float to IEEE format. For example, 0.5 and 0.75 got
converted to slightly below their correct values.
My host gcc for amd64 has 64-bit long, but flt_arith needs only 32
bits. The code (at least flt_add.c) can make 32-bit overflows. Such
overflows would set the higher bits of a 64-bit long, which might
cause problems later.
I need to use uint32_t and not int32_t because the code still uses
long, and the sign extension from int32_t to long would cause
problems. The mantissa represents a value in [0, 2) that can't be
negative, so unsigned type is better. Also, signed overflow is
undefined behavior in C, so flt_add.c better make overflows with
uint32_t and not int32_t.
This commit doesn't touch lang/cem/libcc.ansi/stdlib/ext_fmt.h which
continues to use unsigned long for its mantissa fields.
2016-11-05 17:00:24 -04:00
George Koehler
5c62ec2d8f
Assume ANSI C in modules/src/flt_arith
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Remove the #include "ansi.h" and always use the prototypes.
2016-11-05 16:24:18 -04:00
David Given
4ba409eb74
Ensure the modules properly depend on their headers.
2016-11-05 11:52:54 +01:00
David Given
fee47b25c3
Merge from default.
2016-11-05 11:47:53 +01:00
David Given
7f64fe96c7
Properly declare the library headers as dependencies.
2016-11-05 11:47:36 +01:00
David Given
4fa2c94a4a
Correctly mangle labels used in initialisers.
2016-10-31 23:21:33 +01:00
David Given
9261cd978d
Typo fix.
2016-10-31 23:16:02 +01:00
David Given
941072e0d7
Add, I hope, patterns for fmsub, fnmadd, and fnmsub (also float versions).
2016-10-31 22:36:54 +01:00
David Given
44f0cea6ca
Also use fmadd for single-precision floats.
2016-10-31 19:55:16 +01:00
David Given
064d1a5d5d
Use fmadd for multiply-and-add instructions.
2016-10-31 19:52:17 +01:00
David Given
e19850b114
Fix a few c11isms.
2016-10-30 16:51:06 +01:00
David Given
694d1e2deb
Merge from default.
2016-10-30 15:59:44 +01:00
David Given
db03785109
Merge pull request #7 from davidgiven/travis
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Use built-in Lua rather than relying on a system one
2016-10-30 15:59:04 +01:00
David Given
9b6a5e3ae7
Merge from default.
2016-10-30 15:53:26 +01:00
David Given
a5990289a9
Don't allow parallel builds in the top-level makefile.
2016-10-30 15:49:39 +01:00
David Given
613821d771
Old versions of make don't support -r.
2016-10-30 14:28:08 +01:00
David Given
ca5b6e07bb
Properly export symbols.
2016-10-29 23:52:17 +02:00
David Given
8c3670483f
Get top working with the PowerPC; use it to eliminate useless branches and
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moves.
2016-10-29 23:37:11 +02:00
David Given
a8c4dac67c
Merge from default (merging in George Koehler's PowerPC changes).
2016-10-29 22:40:40 +02:00
David Given
a311e61360
Add support for preserved registers.
2016-10-29 20:22:44 +02:00
David Given
e3ebf986e9
More opcodes.
2016-10-29 13:32:09 +02:00
David Given
1ae8b90238
More opcodes.
2016-10-29 12:55:34 +02:00
David Given
acaae765af
Emit negative constants correctly.
2016-10-29 12:55:21 +02:00
David Given
61349389fb
More opcodes. sti can now cope with non-standard sizes (really need a better
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fix for this). Hack in crude support for mismatched stack pushes and pops (ints
vs longs).
2016-10-29 12:48:05 +02:00
David Given
68419da235
Actually, the locals need to go above the spills and saved regs, so fp == lb.
2016-10-29 12:00:33 +02:00
David Given
2cc2c0ae98
Lots more opcodes. Rearrange the stack layout so that fp->ab is a fixed value
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(needed for CHAINFP and FPTOAB). Wire up lfrs to calls via a phi when
necessary, to allow call-bra-lfr chains.
2016-10-29 11:57:56 +02:00
David Given
bfa65168e2
Don't generate phis if unnecessary (because this breaks the
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critical-edge-splitting guarantee and causes insertion of phi copies to fail).
2016-10-29 10:55:48 +02:00
David Given
658db4ba71
Mangle label names (turns out that the ACK assembler can't really cope with
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labels that are the same name as instructions...).
2016-10-27 23:17:16 +02:00
David Given
81525c0f2c
Swaps work (at least for registers). More opcodes. Rearrange the stack layout
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so we can always trivially find fp, which lets CHAINFP work.
2016-10-27 21:50:58 +02:00
David Given
be3dece5af
Allow emission of strings containing ".
2016-10-27 21:48:46 +02:00
David Given
51bd3ee4dd
Fix bug where some phis weren't being inserted when a given variable definition
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needed more than one phi (due to the dominance frontier containing more than
one basic block).
2016-10-27 21:40:25 +02:00
David Given
9977ce841a
Remove the bytes1, bytes2, bytes4, bytes8 attributes; remove the concept of a
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register 'type'; now use int/float/long/double throughout to identify
registers. Lots of register allocator tweaks and table bugfixes --- we now get
through the dreading Mathlib.mod!
2016-10-25 23:04:20 +02:00
David Given
45a7f2e993
Phi copies are now inserted as part of type inference. More opcodes.
2016-10-24 22:14:08 +02:00
David Given
111c13e253
More opcodes.
2016-10-24 20:15:22 +02:00
David Given
a4644dee4d
More opcodes.
2016-10-24 12:08:40 +02:00
David Given
b22780c075
More opcodes, including the difficult and fairly stupid los/sts.
2016-10-23 22:24:08 +02:00
David Given
abd0cedd61
Massive change to how IR types are handled; we use the type code for matching
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rather than the size. Much cleaner and simpler.
2016-10-23 21:54:14 +02:00
David Given
b1a3d76d6f
Re-re-add the type inference layer, now I know more about how things work.
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Remove that terrible float promotion code.
2016-10-22 23:04:13 +02:00
David Given
11b0bc1055
More opcodes.
2016-10-22 20:32:51 +02:00
David Given
2d52b1fdaa
Remove GETRET; values are now returned directly by CALL. Fix a bug in
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convertstackops which was resulting in duplicate IR groups.
2016-10-22 12:13:57 +02:00
David Given
ceb938fb3c
More opcodes.
2016-10-22 11:26:28 +02:00
David Given
7ae888b754
Hacky workaround the way the Modula-2 compiler generates non-standard sized
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loads and saves. More opcodes; simplified table using macros.
2016-10-22 10:48:22 +02:00
David Given
90d0661639
Typo fix.
2016-10-22 00:48:55 +02:00
David Given
f851ab83af
Better (and more correct) floating point conversions; fif; various new opcodes.
2016-10-22 00:48:26 +02:00
David Given
d535be87b1
fef4 and fef8 is now cleaner, albeit slower; add some more register alias
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stuff.
2016-10-22 00:02:15 +02:00
David Given
4db402f229
Add (pretty crummy) support for register aliases and static pairs of registers.
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We should have enough functionality now for rather buggy 8-bit ints and
doubles. Rework the table and the platform.c to match.
2016-10-21 23:31:00 +02:00
David Given
d6984d60ac
Add parsing support for register aliases.
2016-10-20 21:47:28 +02:00
David Given
e4fec71f9c
Lots more opcodes; better eviction behaviour; better register moves. Lots more
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PowerPC stuff (some working).
2016-10-19 23:29:05 +02:00
David Given
ffb1eabf45
Floating point promotion is less buggy.
2016-10-19 23:27:53 +02:00
David Given
34c4cfee8f
Merge pull request #6 from kernigh/pr-linuxppc
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PowerPC fixes
2016-10-19 20:39:10 +02:00
