From: Richard Henderson <rth@twiddle.net>
To: Aurelien Jarno <aurelien@aurel32.net>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH for-2.5 04/10] tcg/optimize: allow constant to have copies
Date: Fri, 24 Jul 2015 13:15:08 -0700 [thread overview]
Message-ID: <55B29CCC.7020907@twiddle.net> (raw)
In-Reply-To: <1437755447-10537-5-git-send-email-aurelien@aurel32.net>
On 07/24/2015 09:30 AM, Aurelien Jarno wrote:
> Now that copies and constants are tracked separately, we can allow
> constant to have copies, deferring the choice to use a register or a
> constant to the register allocation pass. This prevent this kind of
> regular constant reloading:
This appears to cause
$ gdb --args ./x86_64-linux-user/qemu-x86_64 /bin/ls
...
(gdb) run
Starting program: /home/rth/work/qemu/bld/x86_64-linux-user/qemu-x86_64 /bin/ls
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff6604700 (LWP 7767)]
qemu-x86_64: /home/rth/work/qemu/qemu/tcg/tcg.c:1827: tcg_reg_alloc_bb_end:
Assertion `ts->val_type == TEMP_VAL_DEAD' failed.
Program received signal SIGABRT, Aborted.
r~
next prev parent reply other threads:[~2015-07-24 20:15 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 16:30 [Qemu-devel] [PATCH for-2.5 00/10] tcg: improve optimizer Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 01/10] tcg/optimize: optimize temps tracking Aurelien Jarno
2015-07-27 8:21 ` Paolo Bonzini
2015-07-27 9:09 ` Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 02/10] tcg/optimize: add temp_is_const and temp_is_copy functions Aurelien Jarno
2015-07-29 16:01 ` Alex Bennée
2015-07-29 16:25 ` Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 03/10] tcg/optimize: track const/copy status separately Aurelien Jarno
2015-07-27 8:25 ` Paolo Bonzini
2015-07-27 9:10 ` Aurelien Jarno
2015-07-29 16:10 ` Alex Bennée
2015-07-29 16:25 ` Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 04/10] tcg/optimize: allow constant to have copies Aurelien Jarno
2015-07-24 20:15 ` Richard Henderson [this message]
2015-07-24 22:56 ` Aurelien Jarno
2015-07-29 16:12 ` Alex Bennée
2015-07-29 16:27 ` Aurelien Jarno
2015-07-29 20:42 ` Alex Bennée
2015-07-30 7:46 ` Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 05/10] tcg: rename trunc_shr_i32 into trunc_shr_i64_i32 Aurelien Jarno
2015-07-31 6:31 ` Alex Bennée
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 06/10] tcg: don't abuse TCG type in tcg_gen_trunc_shr_i64_i32 Aurelien Jarno
2015-07-31 7:32 ` Alex Bennée
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 07/10] tcg: implement real ext_i32_i64 and extu_i32_i64 ops Aurelien Jarno
2015-07-31 16:01 ` Alex Bennée
2015-07-31 16:11 ` Richard Henderson
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 08/10] tcg/optimize: add optimizations for " Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 09/10] tcg/optimize: do not remember garbage high bits for 32-bit ops Aurelien Jarno
2015-07-24 16:30 ` [Qemu-devel] [PATCH for-2.5 10/10] tcg: update README about size changing ops Aurelien Jarno
2015-07-31 16:02 ` Alex Bennée
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