From a6ffaadff224004ed61a28f9a78a00af8ab07031 Mon Sep 17 00:00:00 2001 From: uros Date: Mon, 5 Sep 2016 14:44:19 +0000 Subject: PR rtl-optimization/77452 * explow.c (plus_constant) : 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 --- gcc/explow.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'gcc/explow.c') 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. */ -- cgit v1.2.1