The following patch fixes an issue Sebastian ran into trying to build Ada
for a new 64-bit PowerPC RTEMS target using the ELFv2 ABI. As I discussed
in the bug, the rs6000 backend has certain assumptions that 64-bit targets
expect that we have FP hardware in the cases where we are using explicit
FP types, so using -msoft-float for 64-bit compiles might have problems.
That said, the following patch does allow Sebastian's build to complete.
This has been bootstrapped and regtested on powerpc64le-linux with no
regressions and Segher has approved it offline. Committed.
Peter
PR target/83387
* config/rs6000/rs6000.c (rs6000_discover_homogeneous_aggregate): Do not
allow arguments in FP registers if TARGET_HARD_FLOAT is false.
Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c (revision 256178)
+++ gcc/config/rs6000/rs6000.c (working copy)
@@ -11097,7 +11097,8 @@ rs6000_discover_homogeneous_aggregate (m
homogeneous aggregates; these types are handled via the
targetm.calls.split_complex_arg mechanism. Complex types
can be elements of homogeneous aggregates, however. */
- if (DEFAULT_ABI == ABI_ELFv2 && type && AGGREGATE_TYPE_P (type))
+ if (TARGET_HARD_FLOAT && DEFAULT_ABI == ABI_ELFv2 && type
+ && AGGREGATE_TYPE_P (type))
{
machine_mode field_mode = VOIDmode;
int field_count = rs6000_aggregate_candidate (type, &field_mode);
