llvm-6502/mips_directives.s at 2f1bfc4c7937fdf59e2d88e0e23d0657daba79b2 - llvm-6502 - Applefritter: Git

6502/llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-24 22:32:47 +00:00

Jack Carter 30116cd2e2 This patch is a partial implementation of mips .set assembler directive. Directive is defined as follows:

.set option
The patch implements following options

    at - lets the assembler use the $at register for macros,
         but generates warnings if the source program uses $at

    noat - let source programs use $at without issuingwarnings.

    noreorder - prevents the assembler from reordering machine 
                language instructions.
    nomacro - causes the assembler to print a warning whenever 
              an assembler operation generates more than one 
              machine language instruction.
    macro - lets the assembler generate multiple machine instructions 
            from a single assembler instruction
    reorder - lets the assembler reorder machine language 
               instructions to improve performance

The above variants are parsed and their boolean values set or unset.
The code to actually use them will come later.

Following options are not implemented yet:

nomips16
nomicromips
move
nomove

Contributer: Vladimir Medic


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165194 91177308-0d34-0410-b5e6-96231b3b80d8

2012-10-04 02:29:46 +00:00

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 # RUN: llvm-mc -triple mips-unknown-unknown %s
 #this test produces no output so there isS no FileCheck call
 $BB0_2:
   .ent directives_test
 	.frame	$sp,0,$ra
 	.mask 	0x00000000,0
 	.fmask	0x00000000,0
 	.set	noreorder
 	.set	nomacro
 	.set	noat
 $JTI0_0:
 	.gpword	($BB0_2)
 	.set  at=$12
 	.set macro
 	.set reorder
 	.end directives_test