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| author | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-09-05 14:44:19 +0000 |
|---|---|---|
| committer | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-09-05 14:44:19 +0000 |
| commit | a6ffaadff224004ed61a28f9a78a00af8ab07031 (patch) | |
| tree | 808b99cdf16abe7de33727977a1a3b6d1ff1d2b4 /gcc/explow.c | |
| parent | 8f8828ba556416b266acd3b02192c68f0d3bc393 (diff) | |
| download | gcc-a6ffaadff224004ed61a28f9a78a00af8ab07031.tar.gz | |
PR rtl-optimization/77452
* explow.c (plus_constant) <case MEM>: Extract scalar constant from
inner-mode reference to a CONST_VECTOR constant in the constant pool.
testsuite/ChangeLog:
PR rtl-optimization/77452
* gcc.target/i386/pr77452.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239989 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/explow.c')
| -rw-r--r-- | gcc/explow.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/explow.c b/gcc/explow.c index b14291d8653..e935c307bcb 100644 --- a/gcc/explow.c +++ b/gcc/explow.c @@ -106,7 +106,15 @@ plus_constant (machine_mode mode, rtx x, HOST_WIDE_INT c, if (GET_CODE (XEXP (x, 0)) == SYMBOL_REF && CONSTANT_POOL_ADDRESS_P (XEXP (x, 0))) { - tem = plus_constant (mode, get_pool_constant (XEXP (x, 0)), c); + rtx cst = get_pool_constant (XEXP (x, 0)); + + if (GET_CODE (cst) == CONST_VECTOR + && GET_MODE_INNER (GET_MODE (cst)) == mode) + { + cst = gen_lowpart (mode, cst); + gcc_assert (cst); + } + tem = plus_constant (mode, cst, c); tem = force_const_mem (GET_MODE (x), tem); /* Targets may disallow some constants in the constant pool, thus force_const_mem may return NULL_RTX. */ |