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ARM: fix big immediate offset construction 

The loop constructs to iterate over the non-overlapping, even
positions of two or three bytes in a word were broken.

This patch fixes the loops. It has been verified to generate the
72 combinations for two and the 80 combinations for three bytes.
tcc-xref
Daniel Glöckner 2009-05-07 00:23:06 +02:00 committed by grischka
parent ca4b4a52ad
commit 530b77e365
1 changed files with 6 additions and 6 deletions
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12
arm-gen.c
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@ -260,7 +260,7 @@ void stuff_const_harder(unsigned long op,unsigned long v) {
for(i=1;i<16;i++)
a[i]=(a[i-1]>>2)|(a[i-1]<<30);
for(i=0;i<12;i++)
for(j=i+4;i<13+i;i++)
for(j=i<4?i+12:15;j>=i+4;j--)
if((v&(a[i]|a[j]))==v) {
o(stuff_const(op,v&a[i]));
o(stuff_const(o2,v&a[j]));
@ -270,15 +270,15 @@ void stuff_const_harder(unsigned long op,unsigned long v) {
n2=o2^0xC00000;
nv=-v;
for(i=0;i<12;i++)
for(j=i+4;i<13+i;i++)
for(j=i<4?i+12:15;j>=i+4;j--)
if((nv&(a[i]|a[j]))==nv) {
o(stuff_const(no,nv&a[i]));
o(stuff_const(n2,nv&a[j]));
return;
}
for(i=0;i<8;i++)
for(j=i+4;i<12;i++)
for(k=j+4;k<13+i;i++)
for(j=i+4;j<12;j++)
for(k=i<4?i+12:15;k>=j+4;k--)
if((v&(a[i]|a[j]|a[k]))==v) {
o(stuff_const(op,v&a[i]));
o(stuff_const(o2,v&a[j]));
@ -288,8 +288,8 @@ void stuff_const_harder(unsigned long op,unsigned long v) {
no=op^0xC00000;
nv=-v;
for(i=0;i<8;i++)
for(j=i+4;i<12;i++)
for(k=j+4;k<13+i;i++)
for(j=i+4;j<12;j++)
for(k=i<4?i+12:15;k>=j+4;k--)
if((nv&(a[i]|a[j]|a[k]))==nv) {
o(stuff_const(no,nv&a[i]));
o(stuff_const(n2,nv&a[j]));