Fix rs6000_legitimate_address_p(), which erroneously marks a valid Altivec
address as being invalid, which causes LRA's process_address() to go into
an infinite loop spilling the same address over and over again.
gcc/
PR target/93658
* config/rs6000/rs6000.c (rs6000_legitimate_address_p): Handle VSX
vector modes.
gcc/testsuite/
PR target/93658
* gcc.target/powerpc/pr93658.c: New test.
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-O3 -fstack-protector-strong -mcpu=power8" } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+
+/* PR93658: Failure compiling this test is an infinite loop in LRA's
+ process_address(), so set a short timeout limit. */
+/* { dg-timeout 5 } */
+
+void bar();
+char b;
+void
+foo (void)
+{
+ char a;
+ int d = b;
+ char *e = &a;
+ while (d)
+ *e++ = --d;
+ bar ();
+}