add gcc options to track simd usage

cmake_targets/CMakeLists.txt

@@ -1419,10 +1419,10 @@ set(KISSFFT_DIR ${OPENAIR_DIR}/kiss_fft130)
 
 add_library(dfts_fpkiss MODULE ${OPENAIR1_DIR}/PHY/TOOLS/oai_kissdfts.c ${OPENAIR1_DIR}/PHY/TOOLS/oai_dfts_tmp.c ${KISSFFT_DIR}/kiss_fft.c)
 target_compile_definitions(dfts_fpkiss PUBLIC -DFIXED_POINT=16 )
-target_compile_options(dfts_fpkiss PUBLIC -O3 -mtune=native -ffast-math -fomit-frame-pointer -dA -fverbose-asm )
+target_compile_options(dfts_fpkiss PUBLIC -O3 -mtune=native -ffast-math -fomit-frame-pointer -dA -fverbose-asm  -ftree-vectorizer-verbose=6 -fopt-info-vec-missed)
 add_library(dfts_flkiss MODULE ${OPENAIR1_DIR}/PHY/TOOLS/oai_kissdfts.c  ${OPENAIR1_DIR}/PHY/TOOLS/oai_dfts_tmp.c ${KISSFFT_DIR}/kiss_fft.c)
 target_compile_definitions(dfts_fpkiss PUBLIC )
-target_compile_options(dfts_fpkiss PUBLIC -O3 -mtune=native -ffast-math -fomit-frame-pointer -dA -fverbose-asm )
+target_compile_options(dfts_fpkiss PUBLIC -O3 -mtune=native -ffast-math -fomit-frame-pointer -dA -fverbose-asm  -ftree-vectorizer-verbose=6 -fopt-info-vec-missed)
 
 set(PHY_SRC_COMMON
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/dci_tools_common.c

openair1/PHY/TOOLS/oai_kissdfts.c

@@ -94,8 +94,19 @@ void rescale_up_int16buff(int size,int16_t *input, int factor){
 }
 
 void rescale_up_newint16buff(int size,int16_t *input, int16_t *output,int factor){
-	for (int i=0;i<(size*2);i=i+1){
-		output[i]=(input[i]*factor);
+	switch (size) {
+	  case 128:
+		for(int j=0; j<256; j++) {
+		  output[j]=input[j]*factor;
+		}	  
+	  break;
+	  default:
+	for (int i=0;i<size;i=i+1){
+		output[2*i]=(input[2*i]*factor);
+		output[2*i+1]=(input[2*i+1]*factor);
+	}
+	  break;
+
 	}
 }