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Re: [Qemu-devel] [PATCH for-2.5 04/10] tcg/optimize: allow constant to h
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [PATCH for-2.5 04/10] tcg/optimize: allow constant to have copies |
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Date: |
Fri, 24 Jul 2015 13:15:08 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
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~
[Qemu-devel] [PATCH for-2.5 08/10] tcg/optimize: add optimizations for ext_i32_i64 and extu_i32_i64 ops, Aurelien Jarno, 2015/07/24
[Qemu-devel] [PATCH for-2.5 05/10] tcg: rename trunc_shr_i32 into trunc_shr_i64_i32, Aurelien Jarno, 2015/07/24
[Qemu-devel] [PATCH for-2.5 02/10] tcg/optimize: add temp_is_const and temp_is_copy functions, Aurelien Jarno, 2015/07/24