!4120 fix depth wise compilation bugs on arm32

Merge pull request !4120 from lixian/master

mindspore/lite/src/runtime/kernel/arm/nnacl/assembly/arm32/ConvDwFp32Center.S

@@ -21,7 +21,7 @@ ConvDwFp32Center:
     // clang's rule seems more simple, though there are no subroutine calls here
     // r4-r8 and q4-q7 must be saved according to https://static.docs.arm.com/ihi0042/i/aapcs32.pdf
     push {r0-r8, r10, r11, lr}
-    vpush {v4-v7}
+    vpush {q4-q7}
     add sp, sp, #112
 
     ldr r4, [sp, #48]
@@ -38,7 +38,7 @@ ConvDwFp32Center:
         cmp r5, #4
         blt LoopW
         LoopW4:
-            mov r11, [sp, #76] // in_sw_step
+            ldr r11, [sp, #76] // in_sw_step
             mov r8, r1 // src_kh
             ldr r2, [sp, #8] // weight_kh
             ldr r6, [sp, #56] // kernel_h
@@ -100,7 +100,7 @@ ConvDwFp32Center:
             mul r11, r11, r12
             add r1, r1, r11
             sub r5, r5, #4
-            cmp r5, r5, #0
+            cmp r5, #0
             ble LoopWEnd
             cmp r5, #4
             bge LoopW
@@ -155,7 +155,7 @@ ConvDwFp32Center:
         bne LoopH
 LoopWEnd:
     sub sp, sp, #112
-    vpop {v4-v7}
+    vpop {q4-q7}
     pop {r0-r8, r10, r11, pc}
 #endif
 #endif

mindspore/lite/src/runtime/kernel/arm/nnacl/assembly/arm32/ConvDwInt8Center.S

@@ -52,7 +52,7 @@ ConvDwInt8Center:
         ldr r5, [sp, #52] // width
         ldr r0, [sp] // dst_w
         LoopW4:
-            mov r11, [sp, #76] // in_sw_step
+            ldr r11, [sp, #76] // in_sw_step
             mov r8, r1 // src_kh
             ldr r2, [sp, #8] // weight_kh
             ldr r6, [sp, #56] // kernel_h
@@ -145,8 +145,11 @@ ConvDwInt8Center:
             mov r12, #4
             mul r11, r11, r12
             add r1, r1, r11
-            subs r5, r5, #1
-            bne LoopW4
+            sub r5, r5, #4
+            cmp r5, #0
+            ble LoopWEnd
+            cmp r5, #4
+            bge LoopW4
         LoopW:
             mov r8, r1 // src_kh
             ldr r2, [sp, #8] // weight_kh
@@ -199,7 +202,7 @@ ConvDwInt8Center:
         str r12, [sp, #4]
         subs r4, r4, #1
         bne LoopH
-
+LoopWEnd:
     sub sp, sp, #112
     vpop {q4-q7}
     pop {r0-r8, r10, r11, pc}