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[Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op usi
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op using tcg_gen_extract() |
Date: |
Wed, 10 May 2017 17:05:28 -0300 |
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
scripts/coccinelle/tcg_gen_extract.cocci | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 scripts/coccinelle/tcg_gen_extract.cocci
diff --git a/scripts/coccinelle/tcg_gen_extract.cocci
b/scripts/coccinelle/tcg_gen_extract.cocci
new file mode 100644
index 0000000000..4080f97cc7
--- /dev/null
+++ b/scripts/coccinelle/tcg_gen_extract.cocci
@@ -0,0 +1,26 @@
+// optimize TCG using extract op
+//
+// Copyright: (C) 2017 Philippe Mathieu-Daudé. GPLv2.
+// Confidence: High
+// Options: --macro-file scripts/cocci-macro-file.h
+@@
+identifier ret, arg;
+constant ofs, len;
+@@
+(
+// from Nikunj A Dadhania comment:
+// http://lists.nongnu.org/archive/html/qemu-devel/2017-02/msg05211.html
+-tcg_gen_shri_tl(ret, arg, ofs);
+-tcg_gen_andi_tl(ret, ret, len);
++tcg_gen_extract_tl(ret, arg, ofs, len);
+|
+// from Aurelien Jarno comment:
+// http://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg01466.html
+-tcg_gen_shri_i32(ret, arg, ofs);
+-tcg_gen_andi_i32(ret, ret, len);
++tcg_gen_extract_i32(ret, arg, ofs, len);
+|
+-tcg_gen_shri_i64(ret, arg, ofs);
+-tcg_gen_andi_i64(ret, ret, len);
++tcg_gen_extract_i64(ret, arg, ofs, len);
+)
--
2.11.0
- [Qemu-devel] [PATCH 0/8] optimize various tcg_gen() functions using extract op, Philippe Mathieu-Daudé, 2017/05/10
- [Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op using tcg_gen_extract(),
Philippe Mathieu-Daudé <=
- Re: [Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Eric Blake, 2017/05/10
- Re: [Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Richard Henderson, 2017/05/10
- Re: [Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Eric Blake, 2017/05/10
- Re: [Qemu-devel] [PATCH 1/8] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Philippe Mathieu-Daudé, 2017/05/10
- [Qemu-devel] [RFC PATCH v2] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Philippe Mathieu-Daudé, 2017/05/10
- Re: [Qemu-devel] [RFC PATCH v2] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Philippe Mathieu-Daudé, 2017/05/10
- Re: [Qemu-devel] [RFC PATCH v2] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Markus Armbruster, 2017/05/11
- Re: [Qemu-devel] [RFC PATCH v2] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Philippe Mathieu-Daudé, 2017/05/11
- Re: [Qemu-devel] [RFC PATCH v2] coccinelle: add a script to optimize tcg op using tcg_gen_extract(), Philippe Mathieu-Daudé, 2017/05/11