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Hexagon (target/hexagon) Reduce manipulation of slot_cancelled

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We only need to track slot for predicated stores and predicated HVX
instructions.

Add arguments to the probe helper functions to indicate if the slot
is predicated.

Here is a simple example of the differences in the TCG code generated:

IN:
0x00400094:  0xf900c102 {       if (P0) R2 = and(R0,R1) }

BEFORE
 ---- 00400094
 mov_i32 slot_cancelled,$0x0
 mov_i32 new_r2,r2
 and_i32 tmp0,p0,$0x1
 brcond_i32 tmp0,$0x0,eq,$L1
 and_i32 tmp0,r0,r1
 mov_i32 new_r2,tmp0
 br $L2
 set_label $L1
 or_i32 slot_cancelled,slot_cancelled,$0x8
 set_label $L2
 mov_i32 r2,new_r2

AFTER
 ---- 00400094
 mov_i32 new_r2,r2
 and_i32 tmp0,p0,$0x1
 brcond_i32 tmp0,$0x0,eq,$L1
 and_i32 tmp0,r0,r1
 mov_i32 new_r2,tmp0
 br $L2
 set_label $L1
 set_label $L2
 mov_i32 r2,new_r2

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20230307025828.1612809-14-tsimpson@quicinc.com>
This commit is contained in:
Taylor Simpson 2023-03-06 18:58:27 -08:00
parent e28b77a6b4
commit 7b84fd04bd
8 changed files with 71 additions and 30 deletions
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4
target/hexagon/idef-parser/idef-parser.lex
View file

@ -5,7 +5,7 @@
%{
/*
* Copyright(c) 2019-2022 rev.ng Labs Srl. All Rights Reserved.
* Copyright(c) 2019-2023 rev.ng Labs Srl. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -312,7 +312,7 @@ STRING_LIT \"(\\.|[^"\\])*\"
"fREAD_PC()" { return PC; }
"USR.LPCFG" { return LPCFG; }
"LOAD_CANCEL(EA)" { return LOAD_CANCEL; }
"STORE_CANCEL(EA)" |
"STORE_CANCEL(EA)" { return STORE_CANCEL; }
"CANCEL" { return CANCEL; }
"N"{LOWER_ID}"N" { yylval->rvalue.type = REGISTER_ARG;
yylval->rvalue.reg.type = DOTNEW;