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Does GIMPLE tree comprise ARRAY_REF/ARRAY_REF_RANGE node
- From: Qing Wei <dragonylffly at gmail dot com>
- To: gcc at gcc dot gnu dot org
- Date: Wed, 02 Jan 2008 06:24:27 -0800
- Subject: Does GIMPLE tree comprise ARRAY_REF/ARRAY_REF_RANGE node
Hi,
I find that in the function expand_expr_real_1(), which translates the
GIMPLE tree nodes to RTL.
There are codes to process the ARRAY_REF/ARRAY_REF_RANGE node. I wrote a
test program in C such like this,
void f(int s1[], int s2[], int s3[])
{
int j;
for (j = 0; j < 16; j++)
s3[j] = s1[j] + s2[j];
}
I set a breakpoint at the codes to process ARRAY_REF node in
expand_expr_real_1(), However I found that GCC never goes there. I do
find that the ARRAY_REF nodes denoting S1[j]/S2[j]/S3[j] exist in
GENERIC tree for the program. After the gimplify_expr() called, they are
lowered to other nodes? If so, why the expand_expr_real_1() handle such
nodes. What is wrong.
Qing