Query: Regarding mtrack-speculation support in gcc latest version

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Hi,

I am trying latest gcc 9.1 version and executing below code with option -mtrack-speculation -march=armv8.5-a

#include<stdio.h>
#include<stdlib.h>
#define limit 10
int arr[limit] = {0};
void main() {

int inp;
printf("enter inp\n");
scanf("%d\n",&inp);
if(inp < limit)
        printf("val=%d\n",arr[inp]);
else
        printf("crossing limit\n");
return;

}


But in disassembly only csel is generating, no csdb is coming:

 40069c:       9a9fd1ef        csel    x15, x15, xzr, le
  4006a0:       b9401fe1        ldr     w1, [sp, #28]
4006a4: b0000080 adrp x0, 411000 <__libc_start_main@GLIBC_2.17>
  4006a8:       91012000        add     x0, x0, #0x48
  4006ac:       93407c21        sxtw    x1, w1
  4006b0:       b8617800        ldr     w0, [x0, x1, lsl #2]
  4006b4:       2a0003e1        mov     w1, w0
  4006b8:       90000000        adrp    x0, 400000 <_init-0x4a0>
  4006bc:       911f8000        add     x0, x0, #0x7e0
  4006c0:       910003ee        mov     x14, sp
  4006c4:       8a0f01ce        and     x14, x14, x15
  4006c8:       910001df        mov     sp, x14
  4006cc:       97ffff99        bl      400530 <printf@plt>
  4006d0:       f10003ff        cmp     sp, #0x0
  4006d4:       da9f03ef        csetm   x15, ne  // ne = any
  4006d8:       1400000b        b       400704 <main+0xb8>
  4006dc:       9a9fc1ef        csel    x15, x15, xzr, gt


Can someone please point, when cdsb will come?

Regards
Gaurav

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Inc. is a member of the Code Aurora Forum,
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