From ca675b73d3ac2e1b57ec385c2c80b05b6382f6b6 Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Sun, 27 Oct 2013 20:03:48 -0700 Subject: [PATCH] i965/fs: Optimize saturating SEL.L(E) with imm val >= 1.0. total instructions in shared programs: 1409124 -> 1406971 (-0.15%) instructions in affected programs: 158376 -> 156223 (-1.36%) Reviewed-by: Eric Anholt Reviewed-by: Paul Berry --- src/mesa/drivers/dri/i965/brw_fs.cpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 2350cd097c5..56284d94e0b 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -1880,6 +1880,28 @@ fs_visitor::opt_algebraic() break; } break; + case BRW_OPCODE_SEL: + if (inst->saturate && inst->src[1].file == IMM) { + switch (inst->conditional_mod) { + case BRW_CONDITIONAL_LE: + case BRW_CONDITIONAL_L: + switch (inst->src[1].type) { + case BRW_REGISTER_TYPE_F: + if (inst->src[1].imm.f >= 1.0f) { + inst->opcode = BRW_OPCODE_MOV; + inst->src[1] = reg_undef; + progress = true; + } + break; + default: + break; + } + break; + default: + break; + } + } + break; default: break; } -- 2.11.0