+2006-02-07 David Edelsohn <edelsohn@gnu.org>
+
+ * doc/invoke.texi (xl-compat): Document conversion and support
+ routine names.
+
2006-02-07 Jeff Law <law@redhat.com>
* tree-vrp.c (find_conditional_asserts): Update comments.
@itemx -mno-xl-compat
@opindex mxl-compat
@opindex mno-xl-compat
-Produce code that conforms more closely to IBM XLC semantics when using
-AIX-compatible ABI. Pass floating-point arguments to prototyped
-functions beyond the register save area (RSA) on the stack in addition
-to argument FPRs. Do not assume that most significant double in 128
-bit long double value is properly rounded when comparing values.
+Produce code that conforms more closely to IBM XL compiler semantics
+when using AIX-compatible ABI. Pass floating-point arguments to
+prototyped functions beyond the register save area (RSA) on the stack
+in addition to argument FPRs. Do not assume that most significant
+double in 128-bit long double value is properly rounded when comparing
+values and converting to double. Use XL symbol names for long double
+support routines.
The AIX calling convention was extended but not initially documented to
handle an obscure K&R C case of calling a function that takes the
-address of its arguments with fewer arguments than declared. AIX XL
+address of its arguments with fewer arguments than declared. IBM XL
compilers access floating point arguments which do not fit in the
RSA from the stack when a subroutine is compiled without
optimization. Because always storing floating-point arguments on the
stack is inefficient and rarely needed, this option is not enabled by
-default and only is necessary when calling subroutines compiled by AIX
+default and only is necessary when calling subroutines compiled by IBM
XL compilers without optimization.
@item -mpe