derek.holloway
7502bf64a4
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54 lines
752 B
ArmAsm
54 lines
752 B
ArmAsm
# mach: aarch64
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# Check the multiply highpart instructions: smulh, umulh.
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# Test -2*2, -1<<32*-1<<32, -2*-2, and 2*2.
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.include "testutils.inc"
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start
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mov x0, #-2
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mov x1, #2
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smulh x2, x0, x1
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cmp x2, #-1
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bne .Lfailure
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umulh x3, x0, x1
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cmp x3, #1
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bne .Lfailure
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mov w0, #-1
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lsl x0, x0, #32 // 0xffffffff00000000
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mov x1, x0
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smulh x2, x0, x1
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cmp x2, #1
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bne .Lfailure
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umulh x3, x0, x1
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mov w4, #-2
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lsl x4, x4, #32
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add x4, x4, #1 // 0xfffffffe00000001
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cmp x3, x4
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bne .Lfailure
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mov x0, #-2
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mov x1, #-2
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smulh x2, x0, x1
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cmp x2, #0
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bne .Lfailure
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umulh x3, x0, x1
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cmp x3, #-4
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bne .Lfailure
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mov x0, #2
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mov x1, #2
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smulh x2, x0, x1
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cmp x2, #0
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bne .Lfailure
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umulh x3, x0, x1
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cmp x3, #0
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bne .Lfailure
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pass
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.Lfailure:
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fail
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