[PATCH] D91596: [PowerPC] [Clang] Fix alignment of 128-bit floating types

[Hubert Tong via Phabricator via cfe-commits]

hubert.reinterpretcast added a comment.

Reverting this patch makes va_arg with the default 128-bit (double-double) long double work again:

  #include <stdarg.h>
  void abort(void);
  
  void foo(int x, ...) {
    va_list ap;
    va_start(ap, x);
    long double ans = va_arg(ap, long double);
    if (ans != 42.L) abort();
  }
  
  int main(void) {
    foo(0, 42.L);
  }

This patch caused the above to abort.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D91596/new/

https://reviews.llvm.org/D91596