sim/testsuite/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         start
  10
  11         mov x0, #-2
  12         mov x1, #2
  13         smulh x2, x0, x1
  14         cmp x2, #-1
  15         bne .Lfailure
  16         umulh x3, x0, x1
  17         cmp x3, #1
  18         bne .Lfailure
  19
  20         mov w0, #-1
  21         lsl x0, x0, #32 // 0xffffffff00000000
  22         mov x1, x0
  23         smulh x2, x0, x1
  24         cmp x2, #1
  25         bne .Lfailure
  26         umulh x3, x0, x1
  27         mov w4, #-2
  28         lsl x4, x4, #32
  29         add x4, x4, #1  // 0xfffffffe00000001
  30         cmp x3, x4
  31         bne .Lfailure
  32
  33         mov x0, #-2
  34         mov x1, #-2
  35         smulh x2, x0, x1
  36         cmp x2, #0
  37         bne .Lfailure
  38         umulh x3, x0, x1
  39         cmp x3, #-4
  40         bne .Lfailure
  41
  42         mov x0, #2
  43         mov x1, #2
  44         smulh x2, x0, x1
  45         cmp x2, #0
  46         bne .Lfailure
  47         umulh x3, x0, x1
  48         cmp x3, #0
  49         bne .Lfailure
  50
  51         pass
  52 .Lfailure:
  53         fail