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-rw-r--r--src/mesa/drivers/dri/i965/brw_disasm.c5
-rw-r--r--src/mesa/drivers/dri/i965/brw_eu_emit.c86
-rw-r--r--src/mesa/drivers/dri/i965/brw_structs.h12
3 files changed, 79 insertions, 24 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_disasm.c b/src/mesa/drivers/dri/i965/brw_disasm.c
index 3a93b25377..be27f9226c 100644
--- a/src/mesa/drivers/dri/i965/brw_disasm.c
+++ b/src/mesa/drivers/dri/i965/brw_disasm.c
@@ -892,7 +892,12 @@ int brw_disasm (FILE *file, struct brw_instruction *inst, int gen)
if (opcode[inst->header.opcode].ndst > 0) {
pad (file, 16);
err |= dest (file, inst);
+ } else if (gen >= 6 && (inst->header.opcode == BRW_OPCODE_IF ||
+ inst->header.opcode == BRW_OPCODE_ELSE ||
+ inst->header.opcode == BRW_OPCODE_ENDIF)) {
+ format (file, " %d", inst->bits1.branch_gen6.jump_count);
}
+
if (opcode[inst->header.opcode].nsrc > 0) {
pad (file, 32);
err |= src0 (file, inst);
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index fbc6894d05..419b40ba84 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -787,6 +787,7 @@ struct brw_instruction *brw_JMPI(struct brw_compile *p,
*/
struct brw_instruction *brw_IF(struct brw_compile *p, GLuint execute_size)
{
+ struct intel_context *intel = &p->brw->intel;
struct brw_instruction *insn;
if (p->single_program_flow) {
@@ -800,9 +801,15 @@ struct brw_instruction *brw_IF(struct brw_compile *p, GLuint execute_size)
/* Override the defaults for this instruction:
*/
- brw_set_dest(insn, brw_ip_reg());
- brw_set_src0(insn, brw_ip_reg());
- brw_set_src1(insn, brw_imm_d(0x0));
+ if (intel->gen < 6) {
+ brw_set_dest(insn, brw_ip_reg());
+ brw_set_src0(insn, brw_ip_reg());
+ brw_set_src1(insn, brw_imm_d(0x0));
+ } else {
+ brw_set_dest(insn, brw_imm_w(0));
+ brw_set_src0(insn, brw_null_reg());
+ brw_set_src1(insn, brw_null_reg());
+ }
insn->header.execution_size = execute_size;
insn->header.compression_control = BRW_COMPRESSION_NONE;
@@ -835,9 +842,15 @@ struct brw_instruction *brw_ELSE(struct brw_compile *p,
insn = next_insn(p, BRW_OPCODE_ELSE);
}
- brw_set_dest(insn, brw_ip_reg());
- brw_set_src0(insn, brw_ip_reg());
- brw_set_src1(insn, brw_imm_d(0x0));
+ if (intel->gen < 6) {
+ brw_set_dest(insn, brw_ip_reg());
+ brw_set_src0(insn, brw_ip_reg());
+ brw_set_src1(insn, brw_imm_d(0x0));
+ } else {
+ brw_set_dest(insn, brw_imm_w(0));
+ brw_set_src0(insn, brw_null_reg());
+ brw_set_src1(insn, brw_null_reg());
+ }
insn->header.compression_control = BRW_COMPRESSION_NONE;
insn->header.execution_size = if_insn->header.execution_size;
@@ -854,9 +867,13 @@ struct brw_instruction *brw_ELSE(struct brw_compile *p,
} else {
assert(if_insn->header.opcode == BRW_OPCODE_IF);
- if_insn->bits3.if_else.jump_count = br * (insn - if_insn);
- if_insn->bits3.if_else.pop_count = 0;
- if_insn->bits3.if_else.pad0 = 0;
+ if (intel->gen < 6) {
+ if_insn->bits3.if_else.jump_count = br * (insn - if_insn);
+ if_insn->bits3.if_else.pop_count = 0;
+ if_insn->bits3.if_else.pad0 = 0;
+ } else {
+ if_insn->bits1.branch_gen6.jump_count = br * (insn - if_insn + 1);
+ }
}
return insn;
@@ -884,9 +901,15 @@ void brw_ENDIF(struct brw_compile *p,
} else {
struct brw_instruction *insn = next_insn(p, BRW_OPCODE_ENDIF);
- brw_set_dest(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
- brw_set_src0(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
- brw_set_src1(insn, brw_imm_d(0x0));
+ if (intel->gen < 6) {
+ brw_set_dest(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
+ brw_set_src0(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_UD));
+ brw_set_src1(insn, brw_imm_d(0x0));
+ } else {
+ brw_set_dest(insn, retype(brw_vec4_grf(0,0), BRW_REGISTER_TYPE_W));
+ brw_set_src0(insn, brw_null_reg());
+ brw_set_src1(insn, brw_null_reg());
+ }
insn->header.compression_control = BRW_COMPRESSION_NONE;
insn->header.execution_size = patch_insn->header.execution_size;
@@ -900,26 +923,41 @@ void brw_ENDIF(struct brw_compile *p,
*/
if (patch_insn->header.opcode == BRW_OPCODE_IF) {
if (intel->gen < 6) {
- /* Automagically turn it into an IFF:
+ /* Turn it into an IFF, which means no mask stack operations for
+ * all-false and jumping past the ENDIF.
*/
patch_insn->header.opcode = BRW_OPCODE_IFF;
+ patch_insn->bits3.if_else.jump_count = br * (insn - patch_insn + 1);
+ patch_insn->bits3.if_else.pop_count = 0;
+ patch_insn->bits3.if_else.pad0 = 0;
+ } else {
+ /* As of gen6, there is no IFF and IF must point to the ENDIF. */
+ patch_insn->bits1.branch_gen6.jump_count = br * (insn - patch_insn);
}
- patch_insn->bits3.if_else.jump_count = br * (insn - patch_insn + 1);
- patch_insn->bits3.if_else.pop_count = 0;
- patch_insn->bits3.if_else.pad0 = 0;
- } else if (patch_insn->header.opcode == BRW_OPCODE_ELSE) {
- patch_insn->bits3.if_else.jump_count = br * (insn - patch_insn + 1);
- patch_insn->bits3.if_else.pop_count = 1;
- patch_insn->bits3.if_else.pad0 = 0;
} else {
- assert(0);
+ assert(patch_insn->header.opcode == BRW_OPCODE_ELSE);
+ if (intel->gen < 6) {
+ /* BRW_OPCODE_ELSE pre-gen6 should point just past the
+ * matching ENDIF.
+ */
+ patch_insn->bits3.if_else.jump_count = br * (insn - patch_insn + 1);
+ patch_insn->bits3.if_else.pop_count = 1;
+ patch_insn->bits3.if_else.pad0 = 0;
+ } else {
+ /* BRW_OPCODE_ELSE on gen6 should point to the matching ENDIF. */
+ patch_insn->bits1.branch_gen6.jump_count = br * (insn - patch_insn);
+ }
}
/* Also pop item off the stack in the endif instruction:
*/
- insn->bits3.if_else.jump_count = 0;
- insn->bits3.if_else.pop_count = 1;
- insn->bits3.if_else.pad0 = 0;
+ if (intel->gen < 6) {
+ insn->bits3.if_else.jump_count = 0;
+ insn->bits3.if_else.pop_count = 1;
+ insn->bits3.if_else.pad0 = 0;
+ } else {
+ insn->bits1.branch_gen6.jump_count = 2;
+ }
}
}
diff --git a/src/mesa/drivers/dri/i965/brw_structs.h b/src/mesa/drivers/dri/i965/brw_structs.h
index 7b919872c4..8ce9af9c4f 100644
--- a/src/mesa/drivers/dri/i965/brw_structs.h
+++ b/src/mesa/drivers/dri/i965/brw_structs.h
@@ -1381,6 +1381,18 @@ struct brw_instruction
GLuint dest_horiz_stride:2;
GLuint dest_address_mode:1;
} ia16;
+
+ struct {
+ GLuint dest_reg_file:2;
+ GLuint dest_reg_type:3;
+ GLuint src0_reg_file:2;
+ GLuint src0_reg_type:3;
+ GLuint src1_reg_file:2;
+ GLuint src1_reg_type:3;
+ GLuint pad:1;
+
+ GLint jump_count:16;
+ } branch_gen6;
} bits1;
generated by cgit v1.2.3 (git 2.51.0) at 2025-10-31 06:28:48 +0000