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aco/ra: Add helper to get a PhysRegInterval for the register demand

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Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8737>
This commit is contained in:
Tony Wasserka
2021-01-27 14:28:12 +01:00
committed by Marge Bot
parent 32fc4dada2
commit 5df057a3e6
1 changed files with 12 additions and 20 deletions
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src/amd/compiler/aco_register_allocation.cpp
+12 -20
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@@ -196,6 +196,14 @@ uint32_t get_stride(RegClass rc) {
}
}
PhysRegInterval get_reg_bounds(Program* program, RegType type) {
if (type == RegType::vgpr) {
return { PhysReg { 256 }, (unsigned)program->max_reg_demand.vgpr };
} else {
return { PhysReg { 0 }, (unsigned)program->max_reg_demand.sgpr };
}
}
struct DefInfo {
PhysRegInterval bounds;
uint8_t size;
@@ -206,11 +214,7 @@ struct DefInfo {
size = rc.size();
stride = get_stride(rc);
if (rc.type() == RegType::vgpr) {
bounds = { PhysReg { 256 }, (unsigned)ctx.program->max_reg_demand.vgpr };
} else {
bounds = { PhysReg { 0 }, (unsigned)ctx.program->max_reg_demand.sgpr };
}
bounds = get_reg_bounds(ctx.program, rc.type());
if (rc.is_subdword() && operand >= 0) {
/* stride in bytes */
@@ -1206,18 +1210,11 @@ bool get_reg_specified(ra_ctx& ctx,
if (!rc.is_subdword() && reg.byte())
return false;
const uint32_t stride = get_stride(rc);
PhysRegInterval bounds;
if (rc.type() == RegType::vgpr) {
bounds = { PhysReg { 256 }, (unsigned)ctx.program->max_reg_demand.vgpr };
} else {
bounds = { PhysReg { 0 }, (unsigned)ctx.program->max_reg_demand.sgpr };
if (reg % stride != 0)
if (rc.type() == RegType::sgpr && reg % get_stride(rc) != 0)
return false;
}
PhysRegInterval reg_win = { reg, rc.size() };
PhysRegInterval bounds = get_reg_bounds(ctx.program, rc.type());
if (!bounds.contains(reg_win))
return false;
@@ -1389,12 +1386,7 @@ PhysReg get_reg_create_vector(ra_ctx& ctx,
uint32_t size = rc.size();
uint32_t bytes = rc.bytes();
uint32_t stride = get_stride(rc);
PhysRegInterval bounds;
if (rc.type() == RegType::vgpr) {
bounds = { PhysReg { 256 }, (unsigned)ctx.program->max_reg_demand.vgpr };
} else {
bounds = { PhysReg { 0 }, (unsigned)ctx.program->max_reg_demand.sgpr };
}
PhysRegInterval bounds = get_reg_bounds(ctx.program, rc.type());
//TODO: improve p_create_vector for sub-dword vectors