diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/glsl/ir_optimization.h | 1 | ||||
| -rw-r--r-- | src/compiler/glsl/lower_instructions.cpp | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/src/compiler/glsl/ir_optimization.h b/src/compiler/glsl/ir_optimization.h index 485e8e01eef..82cdac9b3cc 100644 --- a/src/compiler/glsl/ir_optimization.h +++ b/src/compiler/glsl/ir_optimization.h @@ -53,6 +53,7 @@ #define IMUL_HIGH_TO_MUL 0x80000 #define DDIV_TO_MUL_RCP 0x100000 #define DIV_TO_MUL_RCP (FDIV_TO_MUL_RCP | DDIV_TO_MUL_RCP) +#define SQRT_TO_ABS_SQRT 0x200000 /* Opertaions for lower_64bit_integer_instructions() */ #define MUL64 (1U << 0) diff --git a/src/compiler/glsl/lower_instructions.cpp b/src/compiler/glsl/lower_instructions.cpp index 729cb13f84f..697bb84344e 100644 --- a/src/compiler/glsl/lower_instructions.cpp +++ b/src/compiler/glsl/lower_instructions.cpp @@ -168,6 +168,7 @@ private: void find_lsb_to_float_cast(ir_expression *ir); void find_msb_to_float_cast(ir_expression *ir); void imul_high_to_mul(ir_expression *ir); + void sqrt_to_abs_sqrt(ir_expression *ir); ir_expression *_carry(operand a, operand b); }; @@ -1582,6 +1583,13 @@ lower_instructions_visitor::imul_high_to_mul(ir_expression *ir) } } +void +lower_instructions_visitor::sqrt_to_abs_sqrt(ir_expression *ir) +{ + ir->operands[0] = new(ir) ir_expression(ir_unop_abs, ir->operands[0]); + this->progress = true; +} + ir_visitor_status lower_instructions_visitor::visit_leave(ir_expression *ir) { @@ -1719,6 +1727,12 @@ lower_instructions_visitor::visit_leave(ir_expression *ir) imul_high_to_mul(ir); break; + case ir_unop_rsq: + case ir_unop_sqrt: + if (lowering(SQRT_TO_ABS_SQRT)) + sqrt_to_abs_sqrt(ir); + break; + default: return visit_continue; } |