961107ec63
- Allow bitcast for vectors with differing lane widths - Remove raw_bitcast IR instruction - Change all users of raw_bitcast to bitcast - Implement support for no-op bitcast cases across backends This implements the second step of the plan outlined here: https://github.com/bytecodealliance/wasmtime/issues/4566#issuecomment-1234819394
28 lines
635 B
Plaintext
28 lines
635 B
Plaintext
test run
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target aarch64
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target x86_64
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target s390x
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; the interpreter does not support bitcasting to/from references
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function %bitcast_ir64(i64) -> i8 {
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block0(v0: i64):
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v1 = bitcast.r64 v0
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v2 = is_null v1
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return v2
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}
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; run: %bitcast_ir64(0) == 1
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; run: %bitcast_ir64(18446744073709551615) == 0
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; run: %bitcast_ir64(-1) == 0
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; run: %bitcast_ir64(127) == 0
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function %bitcast_ri64(i64) -> i64 {
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block0(v0: i64):
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v1 = bitcast.r64 v0
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v2 = bitcast.i64 v1
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return v2
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}
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; run: %bitcast_ri64(0) == 0
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; run: %bitcast_ri64(18446744073709551615) == 18446744073709551615
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; run: %bitcast_ri64(-1) == -1
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; run: %bitcast_ri64(127) == 127
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