diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0aa9562b12e..d702fae6b6f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-04-11 Jakub Jelinek + + PR rtl-optimization/60663 + * cse.c (cse_insn): Set src_volatile on ASM_OPERANDS in + PARALLEL. + 2014-04-10 Jan Hubicka Jakub Jelinek diff --git a/gcc/cse.c b/gcc/cse.c index 852d13ebf5b..b8223f7a35e 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -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 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a8bf48f4d53..c9dbd8a2643 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2014-04-11 Jakub Jelinek + + PR rtl-optimization/60663 + * gcc.target/arm/pr60663.c: New test. + 2014-04-10 Jason Merrill * g++.dg/dso/dlclose1.C: Disable for 4.9. diff --git a/gcc/testsuite/gcc.target/arm/pr60663.c b/gcc/testsuite/gcc.target/arm/pr60663.c new file mode 100644 index 00000000000..b79b830e1a9 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/pr60663.c @@ -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; +}