tree 43608034437ebf55ae71c8463a2b9f6588267fdf
parent d0c1ea928c5c4a99689ff3dcbf1ca578d56b80a3
author Dominik Steenken <dost@de.ibm.com> 1751276443 +0200
committer GitHub <noreply@github.com> 1751276443 +0200
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Global string alignment (#142346)

When creating global strings, some targets have requirements that need
to be taken into account. Previously, the global strings created by
`IRBuilder::createGlobalString` had a hard-coded alignment of `1`.

This commit makes it so that the alignment is taken from the data layout
instead, giving targets the chance to align global strings according to
their preferences.

This PR is motivated by (and should fix) #141491, where the 1-byte
alignment in a global string created by a `printf` optimization led to
the resulting assembly in a `-fno-PIC` compile to unexpectedly reference
the GOT based on whether the code contained `printf` statements of the
form `printf("foo\n");`.