33 lines
1.5 KiB
ArmAsm
33 lines
1.5 KiB
ArmAsm
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## A snippet from https://github.com/riscv/riscv-v-spec.
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# RUN: llvm-mc -triple=riscv64 -filetype=obj --mattr=+experimental-v < %s \
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# RUN: | llvm-objdump -d --mattr=+experimental-v - \
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# RUN: | FileCheck %s --check-prefix=CHECK-INST
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loop:
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vsetvli a3, a0, e16,m4,ta,ma # vtype = 16-bit integer vectors
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# CHECK-INST: d7 76 a5 0c vsetvli a3, a0, e16,m4,ta,ma
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vle16.v v4, (a1) # Get 16b vector
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# CHECK-INST: 07 d2 05 02 vle16.v v4, (a1)
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slli t1, a3, 1 # Multiply length by two bytes/element
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# CHECK-INST: 13 93 16 00 slli t1, a3, 1
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add a1, a1, t1 # Bump pointer
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# CHECK-INST: b3 85 65 00 add a1, a1, t1
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vwmul.vx v8, v4, x10 # 32b in <v8--v15>
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# CHECK-INST: 57 64 45 ee vwmul.vx v8, v4, a0
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vsetvli x0, a0, e32,m8,ta,ma # Operate on 32b values
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# CHECK-INST: 57 70 35 0d vsetvli zero, a0, e32,m8,ta,ma
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vsrl.vi v8, v8, 3
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# CHECK-INST: 57 b4 81 a2 vsrl.vi v8, v8, 3
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vse32.v v8, (a2) # Store vector of 32b
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# CHECK-INST: 27 64 06 02 vse32.v v8, (a2)
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slli t1, a3, 2 # Multiply length by four bytes/element
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# CHECK-INST: 13 93 26 00 slli t1, a3, 2
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add a2, a2, t1 # Bump pointer
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# CHECK-INST: 33 06 66 00 add a2, a2, t1
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sub a0, a0, a3 # Decrement count
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# CHECK-INST: 33 05 d5 40 sub a0, a0, a3
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bnez a0, loop # Any more?
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# CHECK-INST: e3 1a 05 fc bnez a0, 0x0
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