9f647301ff
Implemented for the Cranelift interpreter: - `Bitrev` to reverse the order of the bits in an integer. - `Cls` to count the leading bits which are the same as the sign bit in an integer, yielding one less than the size of the integer for 0 and -1. - `Clz` to count the number of leading zeros in the bitwise representation of the integer. - `Ctz` to count the number of trailing zeros in the bitwise representation of the integer. - `Popcnt` to count the number of ones in the bitwise representation of the integer. Copyright (c) 2021, Arm Limited
41 lines
799 B
Plaintext
41 lines
799 B
Plaintext
test interpret
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test run
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target aarch64
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target x86_64
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function %bitrev_i8(i8) -> i8 {
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block0(v0: i8):
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v1 = bitrev v0
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return v1
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}
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; run: %bitrev_i8(1) == -128
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; run: %bitrev_i8(64) == 2
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; run: %bitrev_i8(-1) == -1
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function %bitrev_i16(i16) -> i16 {
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block0(v0: i16):
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v1 = bitrev v0
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return v1
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}
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; run: %bitrev_i16(1) == -32768
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; run: %bitrev_i16(16384) == 2
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; run: %bitrev_i16(-1) == -1
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function %bitrev_i32(i32) -> i32 {
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block0(v0: i32):
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v1 = bitrev v0
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return v1
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}
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; run: %bitrev_i32(1) == -2147483648
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; run: %bitrev_i32(1073741824) == 2
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; run: %bitrev_i32(-1) == -1
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function %bitrev_i64(i64) -> i64 {
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block0(v0: i64):
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v1 = bitrev v0
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return v1
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}
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; run: %bitrev_i64(1) == -9223372036854775808
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; run: %bitrev_i64(4611686018427387904) == 2
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; run: %bitrev_i64(-1) == -1
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