e8ecf1f809
Fixes #175. The Intel division instructions have fixed input operands that are clobbered by fixed output operands, so the value passed as an input will be clobbered just like a tied operand. The FixedTied operand constraint is used to indicate a fixed input operand that has a corresponding output operand with the same fixed register. Teach the spiller to teach a FixedTied operand the same as a Tied operand constraint and make sure that the input value is killed by the instruction.
16 lines
370 B
Plaintext
16 lines
370 B
Plaintext
test compile
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set is_64bit=1
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isa intel haswell
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function %test(i64) -> i64 native {
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ebb0(v0: i64):
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v2 = iconst.i64 12
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; This division clobbers two of its fixed input registers on Intel.
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; These are FixedTied constraints that the spiller needs to resolve.
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v5 = udiv v0, v2
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v6 = iconst.i64 13
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v9 = udiv v0, v6
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v10 = iadd v5, v9
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return v10
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}
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