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| author | Alan Modra <amodra@bigpond.net.au> | 2006-07-04 03:35:48 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gcc.gnu.org> | 2006-07-04 13:05:48 +0930 |
| commit | 84e9ad15fabafedf6815d5a6c90d65c7774c7792 (patch) | |
| tree | 662adc5cc3c412bfcd452889181b4776cf134b81 | |
| parent | 60410f3ad211bbbf59b5a1b08f92e30b941b1814 (diff) | |
| download | gcc-84e9ad15fabafedf6815d5a6c90d65c7774c7792.zip gcc-84e9ad15fabafedf6815d5a6c90d65c7774c7792.tar.gz gcc-84e9ad15fabafedf6815d5a6c90d65c7774c7792.tar.bz2 | |
re PR target/28207 (128-bit IBM long double misaligned on stack)
PR target/28207
* config/rs6000/rs6000.c (function_arg_boundary): Double-word align
128-bit IBM long doubles for ABI_V4.
From-SVN: r115170
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 13 |
2 files changed, 17 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7d88546..dbc201e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2006-07-04 Alan Modra <amodra@bigpond.net.au> + + PR target/28207 + * config/rs6000/rs6000.c (function_arg_boundary): Double-word align + 128-bit IBM long doubles for ABI_V4. + 2006-07-03 Eric Botcazou <ebotcazou@adacore.com> * tree.c (range_in_array_bounds_p): New predicate. diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 6d78f84..a212611 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -4485,7 +4485,12 @@ function_arg_padding (enum machine_mode mode, tree type) of an argument with the specified mode and type. If it is not defined, PARM_BOUNDARY is used for all arguments. - V.4 wants long longs to be double word aligned. + V.4 wants long longs and doubles to be double word aligned. Just + testing the mode size is a boneheaded way to do this as it means + that other types such as complex int are also double word aligned. + However, we're stuck with this because changing the ABI might break + existing library interfaces. + Doubleword align SPE vectors. Quadword align Altivec vectors. Quadword align large synthetic vector types. */ @@ -4493,7 +4498,11 @@ function_arg_padding (enum machine_mode mode, tree type) int function_arg_boundary (enum machine_mode mode, tree type) { - if (DEFAULT_ABI == ABI_V4 && GET_MODE_SIZE (mode) == 8) + if (DEFAULT_ABI == ABI_V4 + && (GET_MODE_SIZE (mode) == 8 + || (TARGET_HARD_FLOAT + && TARGET_FPRS + && mode == TFmode))) return 64; else if (SPE_VECTOR_MODE (mode) || (type && TREE_CODE (type) == VECTOR_TYPE |