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| author | Vladimir Makarov <vmakarov@redhat.com> | 2019-12-19 21:59:47 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2019-12-19 21:59:47 +0000 |
| commit | a8a728aac26d179b9087760945574a7fb09badea (patch) | |
| tree | 0f836e0eabc09616e277844d7f37fa909c806135 | |
| parent | 38830e506c4d97d391521249aaf5e942e53e980b (diff) | |
| download | gcc-a8a728aac26d179b9087760945574a7fb09badea.zip gcc-a8a728aac26d179b9087760945574a7fb09badea.tar.gz gcc-a8a728aac26d179b9087760945574a7fb09badea.tar.bz2 | |
re PR target/92905 (Spills float-int union to memory)
2019-12-19 Vladimir Makarov <vmakarov@redhat.com>
PR target/92905
* lra-constraints.c (process_alt_operands): Check offmemok when
processing preferred_reload_class.
2019-12-19 Vladimir Makarov <vmakarov@redhat.com>
PR target/92905
* gcc.target/i386/pr92905.c: New test.
From-SVN: r279596
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/lra-constraints.c | 23 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr92905.c | 9 |
4 files changed, 38 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 361697e..1d78e02 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-12-19 Vladimir Makarov <vmakarov@redhat.com> + + PR target/92905 + * lra-constraints.c (process_alt_operands): Check offmemok when + processing preferred_reload_class. + 2019-12-19 Andrew Stubbs <ams@codesourcery.com> * config/gcn/gcn-valu.md diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index 9e0f50e..a5b4eef 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -2722,11 +2722,24 @@ process_alt_operands (int only_alternative) && (targetm.preferred_output_reload_class (op, this_alternative) == NO_REGS)))) { - if (lra_dump_file != NULL) - fprintf (lra_dump_file, - " %d Non-prefered reload: reject+=%d\n", - nop, LRA_MAX_REJECT); - reject += LRA_MAX_REJECT; + if (offmemok && REG_P (op)) + { + if (lra_dump_file != NULL) + fprintf + (lra_dump_file, + " %d Spill pseudo into memory: reject+=3\n", + nop); + reject += 3; + } + else + { + if (lra_dump_file != NULL) + fprintf + (lra_dump_file, + " %d Non-prefered reload: reject+=%d\n", + nop, LRA_MAX_REJECT); + reject += LRA_MAX_REJECT; + } } if (! (MEM_P (op) && offmemok) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 903e904..5dfb3ec 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2019-12-19 Vladimir Makarov <vmakarov@redhat.com> + + PR target/92905 + * gcc.target/i386/pr92905.c: New test. + 2019-12-19 Richard Sandiford <richard.sandiford@arm.com> * g++.dg/ext/sve-sizeless-2.C: Don't expect an error for diff --git a/gcc/testsuite/gcc.target/i386/pr92905.c b/gcc/testsuite/gcc.target/i386/pr92905.c new file mode 100644 index 0000000..672ba8e --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr92905.c @@ -0,0 +1,9 @@ +/* { dg-do compile { target { lp64 } } } */ +/* { dg-options "-O2 -mtune=intel" } */ +float f(float x) +{ + union {float f; unsigned i;} u = {x}; + u.i |= 0x80000000; + return u.f; +} +/* { dg-final { scan-assembler-not "rsp"} } */ |