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(output_constant): Strip off some NOP_EXPRs before further processing. 

From-SVN: r6683
This commit is contained in:
Richard Kenner 1994-03-01 18:33:22 -05:00
parent 2d57146b6e
commit be1ad04c38
1 changed files with 11 additions and 6 deletions
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17
gcc/varasm.c
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@ -3323,6 +3323,17 @@ output_constant (exp, size)
if (size == 0)
return;
/* Eliminate the NON_LVALUE_EXPR_EXPR that makes a cast not be an lvalue.
That way we get the constant (we hope) inside it. Also, strip
off any NOP_EXPR that converts between two record or union types. */
while ((TREE_CODE (exp) == NOP_EXPR
&& (TREE_TYPE (exp) == TREE_TYPE (TREE_OPERAND (exp, 0))
|| TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE
|| TREE_CODE (TREE_TYPE (exp)) == UNION_TYPE
|| TREE_CODE (TREE_TYPE (exp)) == QUAL_UNION_TYPE))
|| TREE_CODE (exp) == NON_LVALUE_EXPR)
exp = TREE_OPERAND (exp, 0);
/* Allow a constructor with no elements for any data type.
This means to fill the space with zeros. */
if (TREE_CODE (exp) == CONSTRUCTOR && CONSTRUCTOR_ELTS (exp) == 0)
@ -3334,12 +3345,6 @@ output_constant (exp, size)
return;
}
/* Eliminate the NOP_EXPR that makes a cast not be an lvalue.
That way we get the constant (we hope) inside it. */
if (TREE_CODE (exp) == NOP_EXPR
&& TREE_TYPE (exp) == TREE_TYPE (TREE_OPERAND (exp, 0)))
exp = TREE_OPERAND (exp, 0);
switch (code)
{
case CHAR_TYPE: