i965: Resolve GCC sign-compare warning.

mesa/src/mesa/drivers/dri/i965/brw_eu_compact.c: In function 'set_3src_control_index':
mesa/src/mesa/drivers/dri/i965/brw_eu_compact.c:805:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; i < ARRAY_SIZE(gen8_3src_control_index_table); i++) {
                      ^
mesa/src/mesa/drivers/dri/i965/brw_eu_compact.c: In function 'set_3src_source_index':
mesa/src/mesa/drivers/dri/i965/brw_eu_compact.c:839:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; i < ARRAY_SIZE(gen8_3src_source_index_table); i++) {
                      ^
mesa/src/mesa/drivers/dri/i965/brw_state_dump.c: In function 'dump_sampler_state':
mesa/src/mesa/drivers/dri/i965/brw_state_dump.c:382:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (i = 0; i < size / 16; i++) {
                  ^
mesa/src/mesa/drivers/dri/i965/brw_state_upload.c: In function 'brw_pipeline_state_finished':
mesa/src/mesa/drivers/dri/i965/brw_state_upload.c:801:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if (i != pipeline) {
             ^
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c: In function 'intel_gen7_hiz_buf_create':
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c:1544:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for (int level = mt->first_level; level <= mt->last_level; ++level) {
                                               ^
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c: In function 'intel_gen8_hiz_buf_create':
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c:1638:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int level = mt->first_level; level <= mt->last_level; ++level) {
                                            ^
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c: In function 'intel_miptree_alloc_hiz':
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c:1771:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int level = mt->first_level; level <= mt->last_level; ++level) {
                                            ^
mesa/src/mesa/drivers/dri/i965/intel_mipmap_tree.c:1775:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for (int layer = 0; layer < mt->level[level].depth; ++layer) {
                                 ^

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Thomas Helland <thomashelland90@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

src/mesa/drivers/dri/i965/brw_eu_compact.c

@@ -802,7 +802,7 @@ set_3src_control_index(const struct brw_device_info *devinfo,
    if (devinfo->gen >= 9 || devinfo->is_cherryview)
       uncompacted |= brw_inst_bits(src, 36, 35) << 24; /* 2b */
 
-   for (int i = 0; i < ARRAY_SIZE(gen8_3src_control_index_table); i++) {
+   for (unsigned i = 0; i < ARRAY_SIZE(gen8_3src_control_index_table); i++) {
       if (gen8_3src_control_index_table[i] == uncompacted) {
          brw_compact_inst_set_3src_control_index(dst, i);
 	 return true;
@@ -836,7 +836,7 @@ set_3src_source_index(const struct brw_device_info *devinfo,
          (brw_inst_bits(src, 104, 104) << 44);  /* 1b */
    }
 
-   for (int i = 0; i < ARRAY_SIZE(gen8_3src_source_index_table); i++) {
+   for (unsigned i = 0; i < ARRAY_SIZE(gen8_3src_source_index_table); i++) {
       if (gen8_3src_source_index_table[i] == uncompacted) {
          brw_compact_inst_set_3src_source_index(dst, i);
 	 return true;

src/mesa/drivers/dri/i965/brw_state_dump.c

@@ -376,13 +376,13 @@ dump_sdc(struct brw_context *brw, uint32_t offset)
 static void dump_sampler_state(struct brw_context *brw,
 			       uint32_t offset, uint32_t size)
 {
-   int i;
+   unsigned i;
    uint32_t *samp = brw->batch.bo->virtual + offset;
 
    for (i = 0; i < size / 16; i++) {
       char name[20];
 
-      sprintf(name, "WM SAMP%d", i);
+      sprintf(name, "WM SAMP%u", i);
       batch_out(brw, name, offset, 0, "filtering\n");
       batch_out(brw, name, offset, 1, "wrapping, lod\n");
       batch_out(brw, name, offset, 2, "default color pointer\n");

src/mesa/drivers/dri/i965/brw_state_upload.c

@@ -797,7 +797,7 @@ brw_pipeline_state_finished(struct brw_context *brw,
                             enum brw_pipeline pipeline)
 {
    /* Save all dirty state into the other pipelines */
-   for (int i = 0; i < BRW_NUM_PIPELINES; i++) {
+   for (unsigned i = 0; i < BRW_NUM_PIPELINES; i++) {
       if (i != pipeline) {
          brw->state.pipelines[i].mesa |= brw->NewGLState;
          brw->state.pipelines[i].brw |= brw->ctx.NewDriverState;

src/mesa/drivers/dri/i965/intel_mipmap_tree.c

@@ -1539,7 +1539,7 @@ intel_gen7_hiz_buf_create(struct brw_context *brw,
       unsigned H_i = H0;
       unsigned Z_i = Z0;
       hz_height = 0;
-      for (int level = mt->first_level; level <= mt->last_level; ++level) {
+      for (unsigned level = mt->first_level; level <= mt->last_level; ++level) {
          unsigned h_i = ALIGN(H_i, vertical_align);
          /* sum(i=0 to m; h_i * max(1, floor(Z_Depth/2**i))) */
          hz_height += h_i * Z_i;
@@ -1635,7 +1635,7 @@ intel_gen8_hiz_buf_create(struct brw_context *brw,
    unsigned Z_i = Z0;
    unsigned sum_h_i = 0;
    unsigned hz_height_3d_sum = 0;
-   for (int level = mt->first_level; level <= mt->last_level; ++level) {
+   for (unsigned level = mt->first_level; level <= mt->last_level; ++level) {
       unsigned i = level - mt->first_level;
       unsigned h_i = ALIGN(H_i, vertical_align);
       /* sum(i=2 to m; h_i) */
@@ -1768,11 +1768,11 @@ intel_miptree_alloc_hiz(struct brw_context *brw,
       return false;
 
    /* Mark that all slices need a HiZ resolve. */
-   for (int level = mt->first_level; level <= mt->last_level; ++level) {
+   for (unsigned level = mt->first_level; level <= mt->last_level; ++level) {
       if (!intel_miptree_level_enable_hiz(brw, mt, level))
          continue;
 
-      for (int layer = 0; layer < mt->level[level].depth; ++layer) {
+      for (unsigned layer = 0; layer < mt->level[level].depth; ++layer) {
          struct intel_resolve_map *m = malloc(sizeof(struct intel_resolve_map));
          exec_node_init(&m->link);
          m->level = level;