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| author | Andrea Corallo <andrea.corallo@arm.com> | 2020-12-09 17:59:12 +0100 |
|---|---|---|
| committer | Andrea Corallo <andrea.corallo@arm.com> | 2020-12-11 10:36:43 +0100 |
| commit | 499651e43854ea65303eb55324263c25256c9735 (patch) | |
| tree | 050bf9435bbea5b4c35d15262ccc11c56a23f87d | |
| parent | fa4a8b6463e0dbc2a072fca835d28ae7a57849d5 (diff) | |
| download | gcc-499651e43854ea65303eb55324263c25256c9735.zip gcc-499651e43854ea65303eb55324263c25256c9735.tar.gz gcc-499651e43854ea65303eb55324263c25256c9735.tar.bz2 | |
ira.c: Fix ICE in ira-color [PR97092]
gcc/ChangeLog
2020-12-10 Andrea Corallo <andrea.corallo@arm.com>
PR rtl-optimization/97092
* ira-color.c (update_costs_from_allocno): Do not carry over mode
between subsequent iterations.
gcc/testsuite/ChangeLog
2020-12-10 Andrea Corallo <andrea.corallo@arm.com>
* gcc.target/aarch64/sve/pr97092.c: New test.
| -rw-r--r-- | gcc/ira-color.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/sve/pr97092.c | 24 |
2 files changed, 28 insertions, 2 deletions
diff --git a/gcc/ira-color.c b/gcc/ira-color.c index d3f8e23..eb52539 100644 --- a/gcc/ira-color.c +++ b/gcc/ira-color.c @@ -1407,9 +1407,11 @@ update_costs_from_allocno (ira_allocno_t allocno, int hard_regno, register classes bigger modes might be invalid, e.g. DImode for AREG on x86. For such cases the register move cost will be maximal. */ - mode = narrower_subreg_mode (mode, ALLOCNO_MODE (cp->second)); + mode = narrower_subreg_mode (ALLOCNO_MODE (cp->first), + ALLOCNO_MODE (cp->second)); + ira_init_register_move_cost_if_necessary (mode); - + cost = (cp->second == allocno ? ira_register_move_cost[mode][rclass][aclass] : ira_register_move_cost[mode][aclass][rclass]); diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pr97092.c b/gcc/testsuite/gcc.target/aarch64/sve/pr97092.c new file mode 100644 index 0000000..69f7a3e --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/sve/pr97092.c @@ -0,0 +1,24 @@ +/* { dg-do assemble { target aarch64_asm_sve_ok } } */ +/* { dg-options "-O1 -ftree-vectorize -march=armv8.2-a+sve" } */ + +void g (void); +long a; + +signed char +bar (int c, int d) +{ + return c + d; +} + +void +foo (void) +{ + int f; + for (; (long)foo < 4;) { + f = 0; + for (; f < 10; f++); + g (); + a = -4; + for (; a; a = bar (a, 1)); + } +} |