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| author | Taylor Simpson <tsimpson@quicinc.com> | 2023-03-06 18:58:27 -0800 |
|---|---|---|
| committer | Taylor Simpson <tsimpson@quicinc.com> | 2023-03-06 20:47:12 -0800 |
| commit | 7b84fd04bda9aab5735cdf359c2c8e39f0a31713 (patch) | |
| tree | 5e4ea7fcaaa70395ccdd45f575b7c5621dc01616 /target/hexagon/idef-parser/idef-parser.lex | |
| parent | e28b77a6b46bfec17ffb1f9764713b2c97418fb3 (diff) | |
| download | qemu-7b84fd04bda9aab5735cdf359c2c8e39f0a31713.zip qemu-7b84fd04bda9aab5735cdf359c2c8e39f0a31713.tar.gz qemu-7b84fd04bda9aab5735cdf359c2c8e39f0a31713.tar.bz2 | |
Hexagon (target/hexagon) Reduce manipulation of slot_cancelled
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>
Diffstat (limited to 'target/hexagon/idef-parser/idef-parser.lex')
| -rw-r--r-- | target/hexagon/idef-parser/idef-parser.lex | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/target/hexagon/idef-parser/idef-parser.lex b/target/hexagon/idef-parser/idef-parser.lex index 2658d9f..5eb8ac5 100644 --- a/target/hexagon/idef-parser/idef-parser.lex +++ b/target/hexagon/idef-parser/idef-parser.lex @@ -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; |