sim/testsuite/sim/aarch64/sumulh.s

   1 # mach: aarch64
   2
   3 # Check the multiply highpart instructions: smulh, umulh.
   4
   5 # Test -2*2, -1<<32*-1<<32, -2*-2, and 2*2.
   6
   7 .include "testutils.inc"
   8
   9         .data
  10         .align 4
  11
  12         start
  13
  14         mov x0, #-2
  15         mov x1, #2
  16         smulh x2, x0, x1
  17         cmp x2, #-1
  18         bne .Lfailure
  19         umulh x3, x0, x1
  20         cmp x3, #1
  21         bne .Lfailure
  22
  23         mov w0, #-1
  24         lsl x0, x0, #32 // 0xffffffff00000000
  25         mov x1, x0
  26         smulh x2, x0, x1
  27         cmp x2, #1
  28         bne .Lfailure
  29         umulh x3, x0, x1
  30         mov w4, #-2
  31         lsl x4, x4, #32
  32         add x4, x4, #1  // 0xfffffffe00000001
  33         cmp x3, x4
  34         bne .Lfailure
  35
  36         mov x0, #-2
  37         mov x1, #-2
  38         smulh x2, x0, x1
  39         cmp x2, #0
  40         bne .Lfailure
  41         umulh x3, x0, x1
  42         cmp x3, #-4
  43         bne .Lfailure
  44
  45         mov x0, #2
  46         mov x1, #2
  47         smulh x2, x0, x1
  48         cmp x2, #0
  49         bne .Lfailure
  50         umulh x3, x0, x1
  51         cmp x3, #0
  52         bne .Lfailure
  53
  54         pass
  55 .Lfailure:
  56         fail