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Reduce replicative code in gram.y by reloc_target field in src_operand

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Bspec says JIP and UIP should be the source operands. It is better if
src_operand has a field "reloc_target" according to bspec.
The replicative code in JMPI and branchloop rules can be merged into one.
This commit is contained in:
Homer Hsing 2012-09-21 10:06:20 +08:00 committed by Damien Lespiau
parent 1f9a4d71e8
commit b0b540f02a
2 changed files with 11 additions and 35 deletions
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1
assembler/src/gen4asm.h
View File

@ -108,6 +108,7 @@ struct src_operand {
int swizzle_x, swizzle_y, swizzle_z, swizzle_w;
uint32_t imm32; /* only set if reg_file == BRW_IMMEDIATE_VALUE */
char *reloc_target; /* bspec: branching instructions JIP and UIP are source operands */
} src_operand;
typedef struct {

45
assembler/src/gram.y
View File

@ -813,39 +813,7 @@ jumpinstruction: predicate JMPI execsize relativelocation2
set_direct_src_operand(&ip_src, &dst, BRW_REGISTER_TYPE_UD);
set_instruction_src0(&$$, &ip_src);
set_instruction_src1(&$$, &$4);
}
| predicate JMPI execsize STRING
{
struct direct_reg dst;
struct dst_operand ip_dst;
struct src_operand ip_src;
struct src_operand imm;
/* The jump instruction requires that the IP register
* be the destination and first source operand, while the
* offset is the second source operand. The next instruction
is the post-incremented IP plus the offset.
*/
dst.reg_file = BRW_ARCHITECTURE_REGISTER_FILE;
dst.reg_nr = BRW_ARF_IP;
dst.subreg_nr = 0;
memset (&imm, '\0', sizeof (imm));
imm.reg_file = BRW_IMMEDIATE_VALUE;
imm.reg_type = BRW_REGISTER_TYPE_D;
imm.imm32 = 0;
memset(&$$, 0, sizeof($$));
$$.header.opcode = $2;
$$.header.execution_size = ffs(1) - 1;
if(advanced_flag)
$$.header.mask_control = BRW_MASK_DISABLE;
set_direct_dst_operand(&ip_dst, &dst, BRW_REGISTER_TYPE_UD);
set_instruction_dest(&$$, &ip_dst);
set_instruction_predicate(&$$, &$1);
set_direct_src_operand(&ip_src, &dst, BRW_REGISTER_TYPE_UD);
set_instruction_src0(&$$, &ip_src);
set_instruction_src1(&$$, &imm);
$$.first_reloc_target = $4;
$$.first_reloc_target = $4.reloc_target;
}
;
@ -2136,12 +2104,19 @@ relativelocation: imm32
;
relativelocation2:
exp
STRING
{
memset (&$$, '\0', sizeof ($$));
$$.reg_file = BRW_IMMEDIATE_VALUE;
$$.reg_type = BRW_REGISTER_TYPE_D;
$$.imm32 = $1.u.d;
$$.reloc_target = $1;
}
| exp
{
memset (&$$, '\0', sizeof ($$));
$$.reg_file = BRW_IMMEDIATE_VALUE;
$$.reg_type = BRW_REGISTER_TYPE_D;
$$.imm32 = $1;
}
| directgenreg region regtype
{