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V0.8: fix shifting of 0 or signed constant. 

This patch matches the one from development. If just returns the
L-value if the shift is a NOP.
This commit is contained in:
Cary R 2008-11-13 17:21:12 -08:00 committed by Stephen Williams
parent b4b9667def
commit 74e2343e52
1 changed files with 4 additions and 4 deletions
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8
tgt-vvp/eval_expr.c
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@ -733,7 +733,7 @@ static struct vector_info draw_binary_expr_lrs(ivl_expr_t exp, unsigned wid)
/* shifting 0 gets 0. */
if (lv.base == 0)
break;
return lv;
if (lv.base < 4) {
struct vector_info tmp;
@ -760,7 +760,7 @@ static struct vector_info draw_binary_expr_lrs(ivl_expr_t exp, unsigned wid)
/* shifting 0 gets 0. */
if (lv.base == 0)
break;
return lv;
if (lv.base < 4) {
struct vector_info tmp;
@ -787,12 +787,12 @@ static struct vector_info draw_binary_expr_lrs(ivl_expr_t exp, unsigned wid)
/* shifting 0 gets 0. */
if (lv.base == 0)
break;
return lv;
/* Sign extend any constant begets itself, if this
expression is signed. */
if ((lv.base < 4) && (ivl_expr_signed(exp)))
break;
return lv;
if (lv.base < 4) {
struct vector_info tmp;