[PATCH] ARM: do not add a regmask for TAILJUMPs Was: [PATCH] improve arm machine code (make -verify-machineinstrs happier)

Matthias Braun mbraun at apple.com
Thu Oct 3 15:48:01 PDT 2013

Attached is a revised version with testcase.

Description: ARM: do not add a regmask for TAILJUMPs
The jump doesn't really kill the registers, the following call does but
we never get back anyway.
This works around some verify-machineinstrs problems when TAILJUMPs are


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On Oct 3, 2013, at 10:41 AM, Matthias Braun <mbraun at apple.com> wrote:

> The attached 3 patches improve some cases in the ARM backend where bad code (in the sense of -verify-machineinstrs) was produced. Please review, thanks.
> Greetings,
> 	Matthias
> <ARM-do-not-add-a-regmask-for-TAILJUMPs.patch><ARM-optimizeSelect-has-to-consider-the-previous-regi.patch><ARM-preserv-undef-flag-in-pseudo-instruction-expande.patch>_______________________________________________
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