From 272a1001a8379ae5f065d87cdb2b33baa1966692 Mon Sep 17 00:00:00 2001
From: Irmen de Jong <irmen@razorvine.net>
Date: Fri, 18 Oct 2024 21:04:18 +0200
Subject: [PATCH] fix bad optimization of floats.pop/push call

---
 codeGenCpu6502/src/prog8/codegen/cpu6502/AsmOptimizer.kt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/codeGenCpu6502/src/prog8/codegen/cpu6502/AsmOptimizer.kt b/codeGenCpu6502/src/prog8/codegen/cpu6502/AsmOptimizer.kt
index dc0075f8d..daa8d164a 100644
--- a/codeGenCpu6502/src/prog8/codegen/cpu6502/AsmOptimizer.kt
+++ b/codeGenCpu6502/src/prog8/codegen/cpu6502/AsmOptimizer.kt
@@ -519,8 +519,10 @@ private fun optimizeJsrRtsAndOtherCombinations(linesByFour: Sequence<List<Indexe
 
         if(!haslabel(second)) {
             if ((" jsr" in first || "\tjsr" in first ) && (" rts" in second || "\trts" in second)) {
-                mods += Modification(lines[0].index, false, lines[0].value.replace("jsr", "jmp"))
-                mods += Modification(lines[1].index, true, null)
+                if("floats.pushFAC" !in first && "floats.popFAC" !in first) {       // these 2 routines depend on being called with JSR!!
+                    mods += Modification(lines[0].index, false, lines[0].value.replace("jsr", "jmp"))
+                    mods += Modification(lines[1].index, true, null)
+                }
             }
             else if (" rts" in first || "\trts" in first) {
                 if (" jmp" in second || "\tjmp" in second)