From c0ea10b691cd12c28ee632fecb2479eb9777cfca Mon Sep 17 00:00:00 2001
From: 4am <a2_4am@sent.com>
Date: Sat, 21 Nov 2020 13:28:54 -0500
Subject: [PATCH] shave even more cycles by using direct branches where
 possible

---
 src/fx/fx.dhgr.soft.diagonal.a | 12 ++++++------
 src/fx/macros.a                |  5 +++++
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/fx/fx.dhgr.soft.diagonal.a b/src/fx/fx.dhgr.soft.diagonal.a
index 8b0e145a8..21e80b86c 100644
--- a/src/fx/fx.dhgr.soft.diagonal.a
+++ b/src/fx/fx.dhgr.soft.diagonal.a
@@ -121,7 +121,7 @@ RowLoop
          +RESET_HGR_HI
 @block4
          iny
-         +BRANCH_IF_Y_IS_OFFSCREEN @block5
+         +LONG_BRANCH_IF_Y_IS_OFFSCREEN @block5
 ;        +COPY_WITH_MASK_IMM_AND_INC %00000000
          +INC_HGR_HI
          +COPY_WITH_MASK_IMM_AND_INC %10011001
@@ -134,7 +134,7 @@ RowLoop
          +RESET_HGR_HI
 @block5
          iny
-         +BRANCH_IF_Y_IS_OFFSCREEN @block6
+         +LONG_BRANCH_IF_Y_IS_OFFSCREEN @block6
 ;        +COPY_WITH_MASK_IMM_AND_INC %00000000
          +INC_HGR_HI
          +COPY_WITH_MASK_IMM_AND_INC %10011111
@@ -147,7 +147,7 @@ RowLoop
          +RESET_HGR_HI
 @block6
          iny
-         +BRANCH_IF_Y_IS_OFFSCREEN @block7
+         +LONG_BRANCH_IF_Y_IS_OFFSCREEN @block7
          +COPY_WITH_MASK_IMM_AND_INC %11100110
          +COPY_WITH_MASK_IMM_AND_INC %10011111
          +COPY_WITH_MASK_IMM_AND_INC %11111111
@@ -212,7 +212,7 @@ RowLoop
          +RESET_HGR_HI
 @block4_aux
          iny
-         +BRANCH_IF_Y_IS_OFFSCREEN @block5_aux
+         +LONG_BRANCH_IF_Y_IS_OFFSCREEN @block5_aux
 ;        +COPY_WITH_MASK_IMM_AND_INC %00000000
          +INC_HGR_HI
          +COPY_WITH_MASK_IMM_AND_INC %11001100
@@ -225,7 +225,7 @@ RowLoop
          +RESET_HGR_HI
 @block5_aux
          iny
-         +BRANCH_IF_Y_IS_OFFSCREEN @block6_aux
+         +LONG_BRANCH_IF_Y_IS_OFFSCREEN @block6_aux
 ;        +COPY_WITH_MASK_IMM_AND_INC %00000000
          +INC_HGR_HI
          +COPY_WITH_MASK_IMM_AND_INC %11111100
@@ -238,7 +238,7 @@ RowLoop
          +RESET_HGR_HI
 @block6_aux
          iny
-         +BRANCH_IF_Y_IS_OFFSCREEN @block7_aux
+         +LONG_BRANCH_IF_Y_IS_OFFSCREEN @block7_aux
          +COPY_WITH_MASK_IMM_AND_INC %10110011
          +COPY_WITH_MASK_IMM_AND_INC %11111100
          +COPY_WITH_MASK_IMM_AND_INC %11111111
diff --git a/src/fx/macros.a b/src/fx/macros.a
index dff050ddc..6d37285f8 100644
--- a/src/fx/macros.a
+++ b/src/fx/macros.a
@@ -141,6 +141,11 @@
 ++
 }
 !macro BRANCH_IF_Y_IS_OFFSCREEN .target {
+         bmi   .target
+         cpy   #40
+         bcs   .target
+}
+!macro LONG_BRANCH_IF_Y_IS_OFFSCREEN .target {
          bpl   +
 -        jmp   .target
 +        cpy   #40