## A snippet from https://github.com/riscv/riscv-v-spec. # RUN: llvm-mc -triple=riscv64 -filetype=obj --mattr=+v < %s \ # RUN: | llvm-objdump -d --mattr=+v - \ # RUN: | FileCheck %s --check-prefix=CHECK-INST loop: vsetvli a3, a0, e16,m4,ta,ma # vtype = 16-bit integer vectors # CHECK-INST: 0ca576d7 vsetvli a3, a0, e16, m4, ta, ma vle16.v v4, (a1) # Get 16b vector # CHECK-INST: 0205d207 vle16.v v4, (a1) slli t1, a3, 1 # Multiply length by two bytes/element # CHECK-INST: 00169313 slli t1, a3, 0x1 add a1, a1, t1 # Bump pointer # CHECK-INST: 006585b3 add a1, a1, t1 vwmul.vx v8, v4, x10 # 32b in # CHECK-INST: ee456457 vwmul.vx v8, v4, a0 vsetvli x0, a0, e32,m8,ta,ma # Operate on 32b values # CHECK-INST: 0d357057 vsetvli zero, a0, e32, m8, ta, ma vsrl.vi v8, v8, 3 # CHECK-INST: a281b457 vsrl.vi v8, v8, 0x3 vse32.v v8, (a2) # Store vector of 32b # CHECK-INST: 02066427 vse32.v v8, (a2) slli t1, a3, 2 # Multiply length by four bytes/element # CHECK-INST: 00269313 slli t1, a3, 0x2 add a2, a2, t1 # Bump pointer # CHECK-INST: 00660633 add a2, a2, t1 sub a0, a0, a3 # Decrement count # CHECK-INST: 40d50533 sub a0, a0, a3 bnez a0, loop # Any more? # CHECK-INST: fc051ae3 bnez a0, 0x0