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[codegen] reintroduce support for carry and borrow instructions in RI… (#1005)

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Reintroduce support for iadd carry variants and isub borrow variants for
RISC ISAs which had been removed in
https://github.com/CraneStation/cranelift/pull/961 and
https://github.com/CraneStation/cranelift/pull/962 because of the lack
of a proper flags register in RISC architectures.
This commit is contained in:
Ujjwal Sharma
2019-09-13 20:57:50 +05:30
committed by Benjamin Bouvier
parent cadd0ac655
commit 3418fb6e18
17 changed files with 326 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
cranelift/codegen/meta/src/isa/x86/encodings.rs
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@@ -384,9 +384,9 @@ pub(crate) fn define(
let func_addr = shared.by_name("func_addr");
let get_pinned_reg = shared.by_name("get_pinned_reg");
let iadd = shared.by_name("iadd");
let iadd_cout = shared.by_name("iadd_cout");
let iadd_cin = shared.by_name("iadd_cin");
let iadd_carry = shared.by_name("iadd_carry");
let iadd_ifcout = shared.by_name("iadd_ifcout");
let iadd_ifcin = shared.by_name("iadd_ifcin");
let iadd_ifcarry = shared.by_name("iadd_ifcarry");
let iadd_imm = shared.by_name("iadd_imm");
let icmp = shared.by_name("icmp");
let icmp_imm = shared.by_name("icmp_imm");
@@ -407,9 +407,9 @@ pub(crate) fn define(
let istore8 = shared.by_name("istore8");
let istore8_complex = shared.by_name("istore8_complex");
let isub = shared.by_name("isub");
let isub_bout = shared.by_name("isub_bout");
let isub_bin = shared.by_name("isub_bin");
let isub_borrow = shared.by_name("isub_borrow");
let isub_ifbout = shared.by_name("isub_ifbout");
let isub_ifbin = shared.by_name("isub_ifbin");
let isub_ifborrow = shared.by_name("isub_ifborrow");
let jump = shared.by_name("jump");
let jump_table_base = shared.by_name("jump_table_base");
let jump_table_entry = shared.by_name("jump_table_entry");
@@ -647,14 +647,14 @@ pub(crate) fn define(
);
e.enc_i32_i64(iadd, rec_rr.opcodes(vec![0x01]));
e.enc_i32_i64(iadd_cout, rec_rout.opcodes(vec![0x01]));
e.enc_i32_i64(iadd_cin, rec_rin.opcodes(vec![0x11]));
e.enc_i32_i64(iadd_carry, rec_rio.opcodes(vec![0x11]));
e.enc_i32_i64(iadd_ifcout, rec_rout.opcodes(vec![0x01]));
e.enc_i32_i64(iadd_ifcin, rec_rin.opcodes(vec![0x11]));
e.enc_i32_i64(iadd_ifcarry, rec_rio.opcodes(vec![0x11]));
e.enc_i32_i64(isub, rec_rr.opcodes(vec![0x29]));
e.enc_i32_i64(isub_bout, rec_rout.opcodes(vec![0x29]));
e.enc_i32_i64(isub_bin, rec_rin.opcodes(vec![0x19]));
e.enc_i32_i64(isub_borrow, rec_rio.opcodes(vec![0x19]));
e.enc_i32_i64(isub_ifbout, rec_rout.opcodes(vec![0x29]));
e.enc_i32_i64(isub_ifbin, rec_rin.opcodes(vec![0x19]));
e.enc_i32_i64(isub_ifborrow, rec_rio.opcodes(vec![0x19]));
e.enc_i32_i64(band, rec_rr.opcodes(vec![0x21]));
e.enc_i32_i64(bor, rec_rr.opcodes(vec![0x09]));