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-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_sanity.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_sanity.c b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
index 11659247c0..bc7b941b78 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sanity.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
@@ -153,17 +153,21 @@ check_register_usage(
if (!check_file_name( ctx, file ))
return FALSE;
- if (index < 0 || index > MAX_REGISTERS) {
- report_error( ctx, "%s[%i]: Invalid index %s", file_names[file], index, name );
- return FALSE;
- }
-
if (indirect_access) {
+ /* Note that 'index' is an offset relative to the value of the
+ * address register. No range checking done here.
+ */
if (!is_any_register_declared( ctx, file ))
report_error( ctx, "%s: Undeclared %s register", file_names[file], name );
ctx->regs_ind_used[file] = TRUE;
}
else {
+ if (index < 0 || index > MAX_REGISTERS) {
+ report_error( ctx, "%s[%i]: Invalid index %s",
+ file_names[file], index, name );
+ return FALSE;
+ }
+
if (!is_register_declared( ctx, file, index ))
report_error( ctx, "%s[%d]: Undeclared %s register", file_names[file], index, name );
ctx->regs_used[file][index / BITS_IN_REG_FLAG] |= (1 << (index % BITS_IN_REG_FLAG));