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re PR rtl-optimization/6177 (ia64 ICE with single-element complex array in LAPACK) 

PR optimization/6177
	* expr.c (expand_expr) [COMPONENT_REF]: Handle op0 CONCAT if
	bitpos is 0 and bitsize CONCAT size.

	* gcc.c-torture/execute/20020411-1.c: New test.

From-SVN: r52178
This commit is contained in:
Jakub Jelinek 2002-04-11 23:04:09 +02:00 committed by Jakub Jelinek
parent 578fc63d14
commit 010f87c44f
4 changed files with 43 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2002-04-11 Jakub Jelinek <jakub@redhat.com>
PR optimization/6177
* expr.c (expand_expr) [COMPONENT_REF]: Handle op0 CONCAT if
bitpos is 0 and bitsize CONCAT size.
2002-04-11 Jakub Jelinek <jakub@redhat.com>
PR c/6223

10
gcc/expr.c
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@ -6954,6 +6954,16 @@ expand_expr (exp, target, tmode, modifier)
MEM_VOLATILE_P (op0) = 1;
}
/* The following code doesn't handle CONCAT.
Assume only bitpos == 0 can be used for CONCAT, due to
one element arrays having the same mode as its element. */
if (GET_CODE (op0) == CONCAT)
{
if (bitpos != 0 || bitsize != GET_MODE_BITSIZE (GET_MODE (op0)))
abort ();
return op0;
}
/* In cases where an aligned union has an unaligned object
as a field, we might be extracting a BLKmode value from
an integer-mode (e.g., SImode) object. Handle this case

5
gcc/testsuite/ChangeLog
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@ -1,10 +1,9 @@
2002-04-11 Jakub Jelinek <jakub@redhat.com>
PR c/6223
* combine.c (if_then_else_cond): Use trunc_int_for_mode on nz.
* gcc.dg/20020411-1.c: New test.
* gcc.c-torture/execute/20020411-1.c: New test.
2002-04-10 Janis Johnson <janis187@us.ibm.com>
* g77.f-torture/execute/6177.f: New test.

25
gcc/testsuite/gcc.c-torture/execute/20020411-1.c Normal file
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@ -0,0 +1,25 @@
/* PR optimization/6177
This testcase ICEd because expr.c did not expect to see a CONCAT
as array rtl. */
extern void abort (void);
extern void exit (int);
__complex__ float foo (void)
{
__complex__ float f[1];
__real__ f[0] = 1.0;
__imag__ f[0] = 1.0;
f[0] = __builtin_conjf (f[0]);
return f[0];
}
int main (void)
{
__complex__ double d[1];
d[0] = foo ();
if (__real__ d[0] != 1.0
|| __imag__ d[0] != -1.0)
abort ();
exit (0);
}