i386: do not 'lexpand' into registers necessarily

Previously, long longs were 'lexpand'ed into two registers
always.

Now, it expands
- constants into two constants (lo-part, hi-part)
- variables into two lvalues with offset+4 for the hi-part.

This makes long long operations look a bit nicer.

Also: don't apply i386 'inc/dec' optimization if carry
generation is wanted.

1 files changed, 2 insertions, 2 deletions

diff --git a/i386-gen.c b/i386-gen.c
index b96e4fb..9cc2f8e 100644
--- a/i386-gen.c
+++ b/i386-gen.c
@@ -754,9 +754,9 @@ ST_FUNC void gen_opi(int op)
             c = vtop->c.i;
             if (c == (char)c) {
                 /* generate inc and dec for smaller code */
-                if (c==1 && opc==0) {
+                if (c==1 && opc==0 && op != TOK_ADDC1) {
                     o (0x40 | r); // inc
-                } else if (c==1 && opc==5) {
+                } else if (c==1 && opc==5 && op != TOK_SUBC1) {
                     o (0x48 | r); // dec
                 } else {
                     o(0x83);