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| author | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | 2015-09-03 13:52:17 +0000 |
|---|---|---|
| committer | William Schmidt <wschmidt@gcc.gnu.org> | 2015-09-03 13:52:17 +0000 |
| commit | 5179d2a2137d80c429ecd01dd0aeab415ffd299e (patch) | |
| tree | 0dacf1cdc1177d00d75d9e223e6b76bc69512a66 /gcc/optabs.c | |
| parent | 4413ddbcb262f848946b4d71bbaafe2ee02417e0 (diff) | |
| download | gcc-5179d2a2137d80c429ecd01dd0aeab415ffd299e.zip gcc-5179d2a2137d80c429ecd01dd0aeab415ffd299e.tar.gz gcc-5179d2a2137d80c429ecd01dd0aeab415ffd299e.tar.bz2 | |
optabs.c (expand_binop): Don't create a broadcast vector with a source element wider than the inner mode.
[gcc]
2015-09-03 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* optabs.c (expand_binop): Don't create a broadcast vector with a
source element wider than the inner mode.
[gcc/testsuite]
2015-09-03 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* gcc.target/powerpc/vec-shift.c: New test.
From-SVN: r227444
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index e533e6e..79c6f06 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -1608,6 +1608,15 @@ expand_binop (machine_mode mode, optab binoptab, rtx op0, rtx op1, if (otheroptab && optab_handler (otheroptab, mode) != CODE_FOR_nothing) { + /* The scalar may have been extended to be too wide. Truncate + it back to the proper size to fit in the broadcast vector. */ + machine_mode inner_mode = GET_MODE_INNER (mode); + if (!CONST_INT_P (op1) + && (GET_MODE_BITSIZE (inner_mode) + < GET_MODE_BITSIZE (GET_MODE (op1)))) + op1 = force_reg (inner_mode, + simplify_gen_unary (TRUNCATE, inner_mode, op1, + GET_MODE (op1))); rtx vop1 = expand_vector_broadcast (mode, op1); if (vop1) { |