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re PR middle-end/31579 (ICE when compiling attached code)

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2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/31579
        * expr.c (expand_expr_addr_expr_1): Call expand_expr
        for the offset with the modifier as EXPAND_INITIALIZER
        if the modifier is EXPAND_INITIALIZER.
        (expand_expr_real_1 <case INTEGER_CST>): Don't force to
        a register if we had an overflow.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/31579
         * g++.dg/torture/pr31579.C: New testcase.

From-SVN: r125655
This commit is contained in:
Andrew Pinski 2007-06-12 19:15:50 +00:00 committed by Andrew Pinski
parent 4c8c70e06a
commit 4543943ad4
4 changed files with 27 additions and 10 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2007-06-12 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR middle-end/31579
* expr.c (expand_expr_addr_expr_1): Call expand_expr
for the offset with the modifier as EXPAND_INITIALIZER
if the modifier is EXPAND_INITIALIZER.
(expand_expr_real_1 <case INTEGER_CST>): Don't force to
a register if we had an overflow.
2007-06-12 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* real.c (real_isfinite): New.

13
gcc/expr.c
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@ -6695,7 +6695,9 @@ expand_expr_addr_expr_1 (tree exp, rtx target, enum machine_mode tmode,
if (modifier != EXPAND_NORMAL)
result = force_operand (result, NULL);
tmp = expand_expr (offset, NULL_RTX, tmode, EXPAND_NORMAL);
tmp = expand_expr (offset, NULL_RTX, tmode,
modifier == EXPAND_INITIALIZER
? EXPAND_INITIALIZER : EXPAND_NORMAL);
result = convert_memory_address (tmode, result);
tmp = convert_memory_address (tmode, tmp);
@ -7118,15 +7120,6 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
temp = immed_double_const (TREE_INT_CST_LOW (exp),
TREE_INT_CST_HIGH (exp), mode);
/* ??? If overflow is set, fold will have done an incomplete job,
which can result in (plus xx (const_int 0)), which can get
simplified by validate_replace_rtx during virtual register
instantiation, which can result in unrecognizable insns.
Avoid this by forcing all overflows into registers. */
if (TREE_OVERFLOW (exp)
&& modifier != EXPAND_INITIALIZER)
temp = force_reg (mode, temp);
return temp;
case VECTOR_CST:

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2007-06-12 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR middle-end/31579
* g++.dg/torture/pr31579.C: New testcase.
2007-06-12 Ian Lance Taylor <iant@google.com>
PR libstdc++/29286

10
gcc/testsuite/g++.dg/torture/pr31579.C Normal file
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@ -0,0 +1,10 @@
/* { dg-do compile } */
// middle-end/31579
// Expand was crashing while expanding the tree for the initializer
struct Industry {
unsigned char produced_cargo[2];
};
unsigned int a = (((unsigned long)&reinterpret_cast<const volatile
char&>((((Industry*)(char*)8)->produced_cargo[0]))) - 8);