253e28ca4f
* Cranelift: Rewrite `(x>>k)<<k` into masking off the bottom `k` bits * Add a runtest for exercising our rewrite of `(x >> k) << k` into masking
75 lines
2.1 KiB
Plaintext
75 lines
2.1 KiB
Plaintext
;; Test that our rewrite of `(x >> k) << k` into masking is correct.
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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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target riscv64
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target s390x
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function %unsigned_shift_right_shift_left_i8(i8) -> i8 {
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block0(v0: i8):
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v1 = iconst.i8 5
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v2 = ushr v0, v1
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v3 = ishl v2, v1
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return v3
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}
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; run: %unsigned_shift_right_shift_left_i8(-1) == 0xe0
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; run: %unsigned_shift_right_shift_left_i8(0) == 0
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; run: %unsigned_shift_right_shift_left_i8(0xaa) == 0xa0
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function %unsigned_shift_right_shift_left_i32(i32) -> i32 {
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block0(v0: i32):
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v1 = iconst.i32 5
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v2 = ushr v0, v1
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v3 = ishl v2, v1
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return v3
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}
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; run: %unsigned_shift_right_shift_left_i32(-1) == 0xffffffe0
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; run: %unsigned_shift_right_shift_left_i32(0) == 0
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; run: %unsigned_shift_right_shift_left_i32(0xaaaaaaaa) == 0xaaaaaaa0
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function %unsigned_shift_right_shift_left_i64(i64) -> i64 {
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block0(v0: i64):
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v1 = iconst.i64 5
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v2 = ushr v0, v1
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v3 = ishl v2, v1
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return v3
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}
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; run: %unsigned_shift_right_shift_left_i64(-1) == 0xffffffffffffffe0
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; run: %unsigned_shift_right_shift_left_i64(0) == 0
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; run: %unsigned_shift_right_shift_left_i64(0xaaaaaaaaaaaaaaaa) == 0xaaaaaaaaaaaaaaa0
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function %signed_shift_right_shift_left_i8(i8) -> i8 {
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block0(v0: i8):
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v1 = iconst.i8 5
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v2 = sshr v0, v1
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v3 = ishl v2, v1
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return v3
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}
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; run: %signed_shift_right_shift_left_i8(-1) == 0xe0
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; run: %signed_shift_right_shift_left_i8(0) == 0
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; run: %signed_shift_right_shift_left_i8(0xaa) == 0xa0
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function %signed_shift_right_shift_left_i32(i32) -> i32 {
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block0(v0: i32):
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v1 = iconst.i32 5
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v2 = sshr v0, v1
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v3 = ishl v2, v1
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return v3
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}
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; run: %signed_shift_right_shift_left_i32(-1) == 0xffffffe0
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; run: %signed_shift_right_shift_left_i32(0) == 0
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; run: %signed_shift_right_shift_left_i32(0xaaaaaaaa) == 0xaaaaaaa0
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function %signed_shift_right_shift_left_i64(i64) -> i64 {
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block0(v0: i64):
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v1 = iconst.i64 5
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v2 = sshr v0, v1
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v3 = ishl v2, v1
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return v3
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}
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; run: %signed_shift_right_shift_left_i64(-1) == 0xffffffffffffffe0
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; run: %signed_shift_right_shift_left_i64(0) == 0
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; run: %signed_shift_right_shift_left_i64(0xaaaaaaaaaaaaaaaa) == 0xaaaaaaaaaaaaaaa0
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