Felix (Ting Wang) 09d51a841d [PowerPC][AIX] Enable aix-small-local-dynamic-tls target attribute (#86641) ...

Following the aix-small-local-exec-tls target attribute, this patch adds
a target attribute for an AIX-specific option in llc that informs the
compiler that it can use a faster access sequence for the local-dynamic
TLS model (formally named aix-small-local-dynamic-tls) when TLS
variables are less than ~32KB in size.

The patch either produces an addi/la with a displacement off of module
handle (return value from .__tls_get_mod) when the address is
calculated, or it produces an addi/la followed by a load/store when the
address is calculated and used for further accesses.

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Co-authored-by: Amy Kwan <amy.kwan1@ibm.com>

2024-04-12 08:18:01 +08:00

5.2 KiB

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