Fix SumOfFrame for extremely wide frames

Author: Erik Språng

Makefile

@@ -71,6 +71,7 @@ endif
 
 ifeq ($(USE_ASAN), Yes)
 CFLAGS += -fsanitize=address
+CXXFLAGS += -fsanitize=address
 LDFLAGS += -fsanitize=address
 endif
 

codec/encoder/core/x86/sample_sc.asm

@@ -127,7 +127,7 @@ WIDTH_LOOP:
     psadbw  xmm2,   xmm0
     psubd   xmm1,   xmm2
     movd    eax,    xmm1
-    mov     cx,     [edi]
+    movzx   ecx,    word [edi]
     add     eax,    ecx
 
     mov     [edi+ebp*2],    ax
@@ -479,6 +479,7 @@ WIDTH_LOOP_X16:
     paddw   xmm1,   xmm2
     movd    eax,    xmm1
     add     ax, word [edi]
+    movzx   eax,    ax
     mov     [edi+ebp*2],    ax
     inc     dword [edx+eax*4]
 
@@ -906,7 +907,7 @@ WIDTH_LOOP:
     psadbw  xmm2,   xmm0
     psubd   xmm1,   xmm2
     movd    r2d,    xmm1
-    mov     r6w,    [r4]
+    movzx   r6d,    word [r4]
     add     r2d,    r6d
     mov     [r4+r1*2],  r2w
     inc     dword [r5+r2*4]
@@ -1224,6 +1225,7 @@ WIDTH_LOOP_X16:
     paddw   xmm1,   xmm2
     movd    r2d,    xmm1
     add     r2w,    word [r4]
+    movzx   r2d,    r2w
     mov     [r4+r1*2],  r2w
     inc     dword [r5+r2*4]
 

test/encoder/EncUT_SVC_me.cpp

@@ -283,6 +283,7 @@ GENERATE_SumOfFrame (SumOf8x8BlockOfFrame_ref, SumOf8x8BlockOfFrame_sse2, 6, 320
 GENERATE_SumOfFrame (SumOf16x16BlockOfFrame_ref, SumOf16x16BlockOfFrame_sse2, 6, 320, WELS_CPU_SSE2)
 GENERATE_SumOfFrame (SumOf8x8BlockOfFrame_ref, SumOf8x8BlockOfFrame_sse2, 640, 320, WELS_CPU_SSE2)
 GENERATE_SumOfFrame (SumOf16x16BlockOfFrame_ref, SumOf16x16BlockOfFrame_sse2, 640, 320, WELS_CPU_SSE2)
+GENERATE_SumOfFrame (SumOf8x8BlockOfFrame_ref, SumOf8x8BlockOfFrame_sse2, 21840, 16, WELS_CPU_SSE2)
 
 GENERATE_SumOfFrame (SumOf8x8BlockOfFrame_ref, SumOf8x8BlockOfFrame_sse4, 8, 2, WELS_CPU_SSE41)
 GENERATE_SumOfFrame (SumOf16x16BlockOfFrame_ref, SumOf16x16BlockOfFrame_sse4, 16, 2, WELS_CPU_SSE41)