Vulkan: Unroll more loops for more mul mat mat performance

Author: 0cc4m

ggml/src/ggml-vulkan/vulkan-shaders/mul_mm.comp

@@ -196,7 +196,7 @@ void main() {
     coopmat<float16_t, gl_ScopeSubgroup, TK, TN, gl_MatrixUseB> cache_b;
     coopmat<ACC_TYPE, gl_ScopeSubgroup, TM, TN, gl_MatrixUseAccumulator> sums[cms_per_row * cms_per_col];
 
-    for (uint i = 0; i < cms_per_row * cms_per_col; i++) {
+    [[unroll]] for (uint i = 0; i < cms_per_row * cms_per_col; i++) {
         sums[i] = coopmat<ACC_TYPE, gl_ScopeSubgroup, TM, TN, gl_MatrixUseAccumulator>(0.0f);
     }
 #else
@@ -209,7 +209,7 @@ void main() {
     }
 #endif
 
-    [[dont_unroll]] for (uint block = start_k; block < end_k; block += BK) {
+    for (uint block = start_k; block < end_k; block += BK) {
         [[unroll]] for (uint l = 0; l < BM; l += loadstride_a) {
 
 #if defined(DATA_A_F32) || defined(DATA_A_F16)
@@ -506,20 +506,20 @@ void main() {
         pos_b += BK / LOAD_VEC_B;
 
 #ifdef COOPMAT
-        for (uint i = 0; i < BK; i += TK) {
-            for (uint cm_row = 0; cm_row < cms_per_row; cm_row++) {
+        [[unroll]] for (uint i = 0; i < BK; i += TK) {
+            [[unroll]] for (uint cm_row = 0; cm_row < cms_per_row; cm_row++) {
                 // Load from shared into cache
                 coopMatLoad(cache_a, buf_a, (warp_r * WM + cm_row * TM) * SHMEM_STRIDE + i, SHMEM_STRIDE, gl_CooperativeMatrixLayoutRowMajor);
 
-                for (uint cm_col = 0; cm_col < cms_per_col; cm_col++) {
+                [[unroll]] for (uint cm_col = 0; cm_col < cms_per_col; cm_col++) {
                     coopMatLoad(cache_b, buf_b, (warp_c * WN + cm_col * TN) * SHMEM_STRIDE + i, SHMEM_STRIDE, gl_CooperativeMatrixLayoutColumnMajor);
 
                     sums[cm_col * cms_per_row + cm_row] = coopMatMulAdd(cache_a, cache_b, sums[cm_col * cms_per_row + cm_row]);
                 }
             }
         }
 #else
-        for (uint i = 0; i < BK; i++) {
+        [[unroll]] for (uint i = 0; i < BK; i++) {
             // Load from shared into cache
             [[unroll]] for (uint wsir = 0; wsir < WMITER; wsir++) {
                 [[unroll]] for (uint j = 0; j < TM; j++) {