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re PR rtl-optimization/71532 (FAIL: gfortran.dg/select_char_1.f90 -O2 execution test)

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PR rtl-optimization/71532
	* cse.c (cse_insn): For const/pure calls, invalidate argument passing
	memory slots.

	* gcc.dg/torture/pr71532.c: New test.

From-SVN: r237503
This commit is contained in:
Jakub Jelinek 2016-06-16 09:11:37 +02:00 committed by Jakub Jelinek
parent b189112fbb
commit 67c2581668
4 changed files with 57 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-06-16 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/71532
* cse.c (cse_insn): For const/pure calls, invalidate argument passing
memory slots.
2016-06-15 Michael Meissner <meissner@linux.vnet.ibm.com>
* config/rs6000/vsx.md (VSINT_84): Add DImode to enable loading

7
gcc/cse.c
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@ -5751,6 +5751,13 @@ cse_insn (rtx_insn *insn)
{
if (!(RTL_CONST_OR_PURE_CALL_P (insn)))
invalidate_memory ();
else
/* For const/pure calls, invalidate any argument slots, because
those are owned by the callee. */
for (tem = CALL_INSN_FUNCTION_USAGE (insn); tem; tem = XEXP (tem, 1))
if (GET_CODE (XEXP (tem, 0)) == USE
&& MEM_P (XEXP (XEXP (tem, 0), 0)))
invalidate (XEXP (XEXP (tem, 0), 0), VOIDmode);
invalidate_for_call ();
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-06-16 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/71532
* gcc.dg/torture/pr71532.c: New test.
2016-06-15 Michael Meissner <meissner@linux.vnet.ibm.com>
* gcc.target/powerpc/p9-dimode1.c: New test.

39
gcc/testsuite/gcc.dg/torture/pr71532.c Normal file
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@ -0,0 +1,39 @@
/* PR rtl-optimization/71532 */
/* { dg-do run } */
/* { dg-additional-options "-mtune=slm" { target i?86-*-* x86_64-*-* } } */
__attribute__((noinline, noclone, pure)) int
foo (int a, int b, int c, int d, int e, int f, int g, int h, int i, int j, int k, int l)
{
a++; b++; c++; d++; e++; f++; g++; h++; i++; j++; k++; l++;
asm volatile ("" : : "g" (&a), "g" (&b), "g" (&c), "g" (&d) : "memory");
asm volatile ("" : : "g" (&e), "g" (&f), "g" (&g), "g" (&h) : "memory");
asm volatile ("" : : "g" (&i), "g" (&j), "g" (&k), "g" (&l) : "memory");
return a + b + c + d + e + f + g + h + i + j + k + l;
}
__attribute__((noinline, noclone, pure)) int
bar (int a, int b, int c, int d, int e, int f, int g, int h, int i, int j, int k, int l)
{
a++; b++; c++; d++; e++; f++; g++; h++; i++; j++; k++; l++;
asm volatile ("" : : "g" (&a), "g" (&b), "g" (&c), "g" (&d) : "memory");
asm volatile ("" : : "g" (&e), "g" (&f), "g" (&g), "g" (&h) : "memory");
asm volatile ("" : : "g" (&i), "g" (&j), "g" (&k), "g" (&l) : "memory");
return 2 * a + b + c + d + e + f + g + h + i + j + k + l;
}
__attribute__((noinline, noclone)) int
test ()
{
int a = foo (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
a += bar (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
return a;
}
int
main ()
{
if (test () != 182)
__builtin_abort ();
return 0;
}