[Mesa-dev] [PATCH 15/25] i965: Add a brw_hw_type_to_reg_type() function
Matt Turner
mattst88 at gmail.com
Fri Aug 4 17:31:47 UTC 2017
Will be used in later commits.
---
src/intel/compiler/brw_reg_type.c | 25 +++++++++++++++++++++++++
src/intel/compiler/brw_reg_type.h | 4 ++++
2 files changed, 29 insertions(+)
diff --git a/src/intel/compiler/brw_reg_type.c b/src/intel/compiler/brw_reg_type.c
index b0696570e5..8da93ae1cb 100644
--- a/src/intel/compiler/brw_reg_type.c
+++ b/src/intel/compiler/brw_reg_type.c
@@ -70,6 +70,31 @@ brw_reg_type_to_hw_type(const struct gen_device_info *devinfo,
}
/**
+ * Convert the hardware representation into a brw_reg_type enumeration value.
+ *
+ * The hardware encoding may depend on whether the value is an immediate.
+ */
+enum brw_reg_type
+brw_hw_type_to_reg_type(const struct gen_device_info *devinfo,
+ enum brw_reg_file file, unsigned hw_type)
+{
+ if (file == BRW_IMMEDIATE_VALUE) {
+ for (enum brw_reg_type i = 0; i <= BRW_REGISTER_TYPE_LAST; i++) {
+ if (gen4_hw_type[i].imm_type == hw_type) {
+ return i;
+ }
+ }
+ } else {
+ for (enum brw_reg_type i = 0; i <= BRW_REGISTER_TYPE_LAST; i++) {
+ if (gen4_hw_type[i].reg_type == hw_type) {
+ return i;
+ }
+ }
+ }
+ unreachable("not reached");
+}
+
+/**
* Return the element size given a hardware register type and file.
*
* The hardware encoding may depend on whether the value is an immediate.
diff --git a/src/intel/compiler/brw_reg_type.h b/src/intel/compiler/brw_reg_type.h
index 54262af1fc..f5c19c03f9 100644
--- a/src/intel/compiler/brw_reg_type.h
+++ b/src/intel/compiler/brw_reg_type.h
@@ -59,6 +59,10 @@ unsigned
brw_reg_type_to_hw_type(const struct gen_device_info *devinfo,
enum brw_reg_file file, enum brw_reg_type type);
+enum brw_reg_type
+brw_hw_type_to_reg_type(const struct gen_device_info *devinfo,
+ enum brw_reg_file file, unsigned hw_type);
+
#define brw_element_size(devinfo, inst, operand) \
brw_hw_reg_type_to_size(devinfo, \
brw_inst_ ## operand ## _reg_file(devinfo, inst), \
--
2.13.0
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