David Given
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8200f041c2
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Fix issue with logical operations and small signed constants which turned out
to affect multiple platforms.
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2019-02-13 20:56:10 +01:00 |
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David Given
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79e7636537
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Teach the code generator about the zero register and how to efficiently access
the stack.
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2018-09-22 11:49:13 +02:00 |
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David Given
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985d3dc7d1
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Remove some old, hopefully unused PowerPC code. Teach the code generator about
non-volatile long registers.
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2018-09-20 23:30:38 +02:00 |
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David Given
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cb20856aea
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A few more minor optimisations.
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2018-09-20 00:39:13 +02:00 |
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David Given
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8fda024ec8
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Remember to save longs and doubles. Yikes.
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2018-09-19 00:09:50 +02:00 |
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David Given
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d23d2dd1b3
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Loads and stores (except longs, which are difficult) are now loaded with two
instructions rather than three.
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2018-09-18 23:38:37 +02:00 |
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David Given
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692caa2b0a
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Add unsigned comparison rules.
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2018-09-18 00:19:40 +02:00 |
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David Given
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fe177bd688
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Add specialist rules for signed integer comparisons; much better code.
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2018-09-17 23:53:18 +02:00 |
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David Given
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b665efca04
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ACK loi 1 and sti 1 load and store unsigned bytes. I think.
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2018-09-17 15:03:44 +01:00 |
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David Given
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0b65591972
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Add hacky 64-bit comparisons (used by M2).
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2018-09-17 12:16:17 +01:00 |
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David Given
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08b1e8d71b
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Make inn work; fix broken 64-bit loads and stores.
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2018-09-14 13:48:43 +02:00 |
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David Given
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ba0849c87c
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Remove la; turns out that the assembler gets upset if you ask it to
generate more than one fixup per instruction (I think).
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2018-09-14 11:30:15 +02:00 |
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David Given
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8379969b6f
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Fix an unsubtle bug where subtractions were done backwards...
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2018-09-11 23:16:50 +02:00 |
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David Given
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bb15c03339
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Remember to preserve input registers if we're going to be reading from them
after writing to the output register.
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2018-09-09 18:53:49 +02:00 |
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David Given
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e88670dad4
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Yikes! Turns out that FPU registers are only 32 bits wide, and doubles are
stored in pairs, just like on the PowerPC!
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2018-09-09 18:25:00 +02:00 |
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David Given
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379c1a4a3c
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Rework floating point conversion. Bash enough of the table into workingness
that the libraries build now.
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2018-09-08 22:06:38 +02:00 |
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David Given
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d2c14ca44f
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Precisely one stack hreg gets allocated for each vreg/congruence group for
eviction; this prevents us from having to worry about moving values from stack
slot to stack slot, which is hard.
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2018-09-08 18:59:55 +02:00 |
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David Given
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b7a1c96986
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MIPS appears to hate converting unsigneds to floats and vice versa.
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2018-09-05 23:53:38 +02:00 |
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David Given
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7fbce066f8
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We attempt to compile the first library function; we fail.
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2018-09-05 00:13:01 +02:00 |
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David Given
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26c0228b14
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The examples all compile now (probably incorrectly, and the libc doesn't
compile yet).
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2018-09-04 23:55:28 +02:00 |
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David Given
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9d80756253
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Lots of assembler and rule bugfixing.
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2018-09-04 23:43:24 +02:00 |
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David Given
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fe5ca5a85f
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Added li and la instructions.
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2018-09-03 22:47:41 +02:00 |
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David Given
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26f9b4ceae
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Add in floating point support to the code generator.
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2018-09-03 22:06:05 +02:00 |
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David Given
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1d6ecddcf4
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The MIPS backend is still full of holes, and cut-and-pasted PowerPC code, but
is beginning to look like an actual code generator.
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2018-09-02 18:57:25 +02:00 |
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