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re PR rtl-optimization/60663 (Errors out on valid inline asm)

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PR rtl-optimization/60663
	* cse.c (cse_insn): Set src_volatile on ASM_OPERANDS in
	PARALLEL.

	* gcc.target/arm/pr60663.c: New test.

From-SVN: r209293
This commit is contained in:
Jakub Jelinek 2014-04-11 12:11:01 +02:00 committed by Jakub Jelinek
parent f8e6f6bad7
commit d8d6ea53a7
4 changed files with 29 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-04-11 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/60663
* cse.c (cse_insn): Set src_volatile on ASM_OPERANDS in
PARALLEL.
2014-04-10 Jan Hubicka <hubicka@ucw.cz>
Jakub Jelinek <jakub@redhat.com>

7
gcc/cse.c
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@ -4642,6 +4642,13 @@ cse_insn (rtx insn)
&& REGNO (dest) >= FIRST_PSEUDO_REGISTER)
sets[i].src_volatile = 1;
/* Also do not record result of a non-volatile inline asm with
more than one result or with clobbers, we do not want CSE to
break the inline asm apart. */
else if (GET_CODE (src) == ASM_OPERANDS
&& GET_CODE (x) == PARALLEL)
sets[i].src_volatile = 1;
#if 0
/* It is no longer clear why we used to do this, but it doesn't
appear to still be needed. So let's try without it since this

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-04-11 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/60663
* gcc.target/arm/pr60663.c: New test.
2014-04-10 Jason Merrill <jason@redhat.com>
* g++.dg/dso/dlclose1.C: Disable for 4.9.

11
gcc/testsuite/gcc.target/arm/pr60663.c Normal file
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@ -0,0 +1,11 @@
/* PR rtl-optimization/60663 */
/* { dg-do compile } */
/* { dg-options "-O2 -march=armv7-a" } */
int
foo (void)
{
unsigned i, j;
asm ("%0 %1" : "=r" (i), "=r" (j));
return i;
}