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riscv64: Delete SelectIf instruction (#5888)

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* riscv64: Delete `SelectIf` instruction

* riscv64: Fix typo in comment

Co-authored-by: Trevor Elliott <awesomelyawesome@gmail.com>

* riscv64: Improve `bmask` codegen

* riscv64: Use `lower_bmask` in `select_spectre_guard`

* riscv64: Use `lower_bmask` to extend values in `select_spectre_guard`

Co-authored-by: Trevor Elliott <awesomelyawesome@gmail.com>

---------

Co-authored-by: Trevor Elliott <awesomelyawesome@gmail.com>
This commit is contained in:
Afonso Bordado
2023-04-11 18:33:32 +01:00
committed by GitHub
parent 9acb649f17
commit 4c32dd7786
43 changed files with 2366 additions and 924 deletions
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cranelift/filetests/filetests/runtests/selectif-spectre-guard.clif
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@@ -4,6 +4,7 @@ set enable_llvm_abi_extensions=true
target aarch64
target s390x
target x86_64
target riscv64
function %select_spectre_guard_i8_eq(i8, i8, i8) -> i8 {
block0(v0: i8, v1: i8, v2: i8):