Stream: git-wasmtime

Topic: wasmtime / issue #7865 Cranelift: Simple multiplication +...

Wasmtime GitHub notifications bot (Feb 03 2024 at 15:35):

bjorn3 added the cranelift label to Issue #7865.

Wasmtime GitHub notifications bot (Feb 03 2024 at 15:35):

bjorn3 added the bug label to Issue #7865.

Wasmtime GitHub notifications bot (Feb 03 2024 at 15:35):

bjorn3 opened issue #7865:

.clif Test Case

test compile
set opt_level=speed
target x86_64

function u0:9(i8) -> i16 system_v {
block0(v0: i8):
    v8 = sextend.i16 v0
    v9 = imul v8, v8
    v10 = iconst.i64 1000
    v13 = sshr v9, v10  ; v10 = 1000
    return v13
}

Steps to Reproduce

• Compile the above test case.

Expected Results

Compiles fine and masks the shift amount as expected.

Actual Results

Panics with "should be implemented in ISLE: inst = v12 = smulhi.i8 v0, v0, type = Some(types::I8)"

Versions and Environment

Cranelift version or commit: Tested with 0.104 and b6a8abc6ce31cf6db7ad5edb9b2567620190ce35.

Operating system: N/A

Architecture: x86_64

Extra Info

Reported to cg_clif by @cbeuw in https://github.com/rust-lang/rustc_codegen_cranelift/issues/1455.

Wasmtime GitHub notifications bot (Feb 03 2024 at 21:27):

alexcrichton closed issue #7865:

.clif Test Case

test compile
set opt_level=speed
target x86_64

function u0:9(i8) -> i16 system_v {
block0(v0: i8):
    v8 = sextend.i16 v0
    v9 = imul v8, v8
    v10 = iconst.i64 1000
    v13 = sshr v9, v10  ; v10 = 1000
    return v13
}

Steps to Reproduce

• Compile the above test case.

Expected Results

Compiles fine and masks the shift amount as expected.

Actual Results

Panics with "should be implemented in ISLE: inst = v12 = smulhi.i8 v0, v0, type = Some(types::I8)"

Versions and Environment

Cranelift version or commit: Tested with 0.104 and b6a8abc6ce31cf6db7ad5edb9b2567620190ce35.

Operating system: N/A

Architecture: x86_64

Extra Info

Reported to cg_clif by @cbeuw in https://github.com/rust-lang/rustc_codegen_cranelift/issues/1455.

Last updated: Dec 23 2024 at 13:07 UTC