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| author | Jakub Jelinek <jakub@redhat.com> | 2009-10-09 21:01:53 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2009-10-09 21:01:53 +0200 |
| commit | 78441afbc88a084f88d821c88635966414fda3b2 (patch) | |
| tree | 0a14cb990a496d2509e552e0f78dbea2f1b1fecd /gcc | |
| parent | aabf6a0372105ce6deb5780e39d648e92a491a37 (diff) | |
| download | gcc-78441afbc88a084f88d821c88635966414fda3b2.zip gcc-78441afbc88a084f88d821c88635966414fda3b2.tar.gz gcc-78441afbc88a084f88d821c88635966414fda3b2.tar.bz2 | |
re PR rtl-optimization/41646 (Reload ICE due to combiner extending life time of a hard register)
PR rtl-optimization/41646
* calls.c (expand_call): For BLKmode types returned in registers
avoid likely spilled hard regs in copy_blkmode_from_reg generated
insns.
* gcc.c-torture/compile/pr41646.c: New test.
From-SVN: r152597
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/calls.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr41646.c | 28 |
4 files changed, 44 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ac0fd78..0dfb2d0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2009-10-09 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/41646 + * calls.c (expand_call): For BLKmode types returned in registers + avoid likely spilled hard regs in copy_blkmode_from_reg generated + insns. + 2009-10-09 Richard Guenther <rguenther@suse.de> PR tree-optimization/41634 diff --git a/gcc/calls.c b/gcc/calls.c index 49e576e..13167a6 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -3020,7 +3020,10 @@ expand_call (tree exp, rtx target, int ignore) } else if (TYPE_MODE (rettype) == BLKmode) { - target = copy_blkmode_from_reg (target, valreg, rettype); + rtx val = valreg; + if (GET_MODE (val) != BLKmode) + val = avoid_likely_spilled_reg (val); + target = copy_blkmode_from_reg (target, val, rettype); /* We can not support sibling calls for this case. */ sibcall_failure = 1; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 64e65d7..a151705 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2009-10-09 Jakub Jelinek <jakub@redhat.com> + + PR rtl-optimization/41646 + * gcc.c-torture/compile/pr41646.c: New test. + 2009-10-09 Richard Guenther <rguenther@suse.de> PR tree-optimization/41634 diff --git a/gcc/testsuite/gcc.c-torture/compile/pr41646.c b/gcc/testsuite/gcc.c-torture/compile/pr41646.c new file mode 100644 index 0000000..f07b6ba --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr41646.c @@ -0,0 +1,28 @@ +/* PR rtl-optimization/41646 */ + +struct A { unsigned long a; }; +struct B { unsigned short b, c, d; }; +struct B bar (unsigned long); + +char * +foo (char *a, struct A *x) +{ + struct B b = bar (x->a); + unsigned char c; + unsigned short d; + a[3] = ((unsigned char) (b.b % 10) + 48); + d = b.b / 10; + a[2] = ((unsigned char) (d % 10) + 48); + d = d / 10; + a[1] = ((unsigned char) (d % 10) + 48); + a[0] = ((unsigned char) ((d / 10) % 10) + 48); + a[4] = 46; + c = (unsigned char) b.c; + a[6] = (c % 10 + 48); + a[5] = ((c / 10) % 10 + 48); + a[7] = 46; + c = b.d; + a[9] = (c % 10 + 48); + a[8] = ((c / 10) % 10 + 48); + return a + 10; +} |