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Re: Recent TCG commit breaks PPC

From: BALATON Zoltan
Subject: Re: Recent TCG commit breaks PPC
Date: Sat, 16 Jan 2021 20:35:54 +0100 (CET)

On Sat, 16 Jan 2021, Richard Henderson wrote:
On 1/16/21 4:38 AM, BALATON Zoltan wrote:

Commit 8fe35e0444be (tcg/optimize: Use tcg_constant_internal with constant
folding) seems to break PPC emulation for me:

Thread 3 "qemu-system-ppc" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff51e7700 (LWP 22636)]
0x0000555555afd4ee in ts_are_copies (ts2=0x7fff8c008f90, ts1=0x7fff8c001510) at
68        return ts_info(ts)->next_copy != ts;

I don't replicate this assertion.

Interestingly, I replicate a different assertion:

qemu-system-ppc: ../qemu/tcg/tcg.c:1210: tcg_temp_alloc: Assertion `n < 512'
Aborted (core dumped)

What compiler version(s) are you guys using?

I'm getting this with gcc 8.4.0


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