Sean Stangl b4c6bfd371 When splitting a const, insert prior to the terminal branch group. (#1325) ...

* When splitting a const, insert prior to the terminal branch group. Closes #1159

Given code like the following, on x86_64, which does not have i128 registers:

    ebb0(v0: i64):
        v1 = iconst.i128 0
        v2 = icmp_imm eq v0, 1
        brnz v2, ebb1
        jump ebb2(v1)

It would be split to:

    ebb0(v0: i64):
        v1 = iconst.i128 0
        v2 = icmp_imm eq v0, 1
        brnz v2, ebb1
        v3, v4 = isplit.i128 v1
        jump ebb2(v3, v4)

But that fails basic-block invariants. This patch changes that to:

    ebb0(v0: i64):
        v1 = iconst.i128 0
        v2 = icmp_imm eq v0, 1
        v3, v4 = isplit.i128 v1
        brnz v2, ebb1
        jump ebb2(v3, v4)

* Add isplit-bb.clif testcase

2020-01-22 17:14:41 +01:00

..

builder.rs

[meta] Remove mentions to Python in comments of the non-meta crate;

2019-07-05 17:50:17 +02:00

constant.rs

Fix documentation link issues

2019-10-31 09:35:08 -07:00

dfg.rs

Bitcasting at control flow exits (#1272)

2020-01-06 15:33:22 -08:00

entities.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

extfunc.rs

Use is_wasm_parameter in translating wasm calls (#1352)

2020-01-17 12:11:54 -08:00

extname.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

framelayout.rs

Fix some additional clippy warnings

2020-01-10 08:38:40 -08:00

function.rs

Refactor unwind; add FDE support. (#1320)

2020-01-13 10:32:55 -06:00

globalvalue.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

heap.rs

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

2019-01-28 15:56:54 -08:00

immediates.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

instructions.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

jumptable.rs

Fix jump table comment grammar (#1259)

2019-11-27 18:41:37 -05:00

layout.rs

When splitting a const, insert prior to the terminal branch group. (#1325)

2020-01-22 17:14:41 +01:00

libcall.rs

Renames Settings ⚠️ (fixes #976) (#1321)

2020-01-13 14:42:49 -07:00

memflags.rs

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

2019-01-28 15:56:54 -08:00

mod.rs

Track frame layout changes. (#1204)

2019-11-18 10:18:38 -08:00

progpoint.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

sourceloc.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

stackslot.rs

Many multi-value returns (#1147)

2019-11-05 14:36:03 -08:00

table.rs

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

2019-01-28 15:56:54 -08:00

trapcode.rs

Always use extern crate std in cranelift-codegen

2019-10-02 11:50:44 -07:00

types.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00

valueloc.rs

Fix clippy warnings.

2019-10-24 17:20:12 -07:00