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| author | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2021-02-22 13:41:46 +0000 |
|---|---|---|
| committer | Andre Vieira <andre.simoesdiasvieira@arm.com> | 2021-02-22 13:46:29 +0000 |
| commit | 4c31a3a6d31b6214ea774d403bf8ab7ebe1ea862 (patch) | |
| tree | b78a35e66c65e7845b32cf0f0b126dad7e11f145 | |
| parent | e9b34037cdd196ab912a7ac3358f8a8d3e307e92 (diff) | |
| download | gcc-4c31a3a6d31b6214ea774d403bf8ab7ebe1ea862.zip gcc-4c31a3a6d31b6214ea774d403bf8ab7ebe1ea862.tar.gz gcc-4c31a3a6d31b6214ea774d403bf8ab7ebe1ea862.tar.bz2 | |
ira: Make sure allocno copies are ordered [PR98791]
gcc/ChangeLog:
2021-02-22 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR rtl-optimization/98791
* ira-conflicts.c (process_regs_for_copy): Don't create allocno copies
for unordered modes.
gcc/testsuite/ChangeLog:
2021-02-22 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR rtl-optimization/98791
* gcc.target/aarch64/sve/pr98791.c: New test.
| -rw-r--r-- | gcc/ira-conflicts.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/sve/pr98791.c | 12 |
2 files changed, 16 insertions, 1 deletions
diff --git a/gcc/ira-conflicts.c b/gcc/ira-conflicts.c index 2c22347..d83cfc1 100644 --- a/gcc/ira-conflicts.c +++ b/gcc/ira-conflicts.c @@ -275,7 +275,10 @@ process_regs_for_copy (rtx reg1, rtx reg2, bool constraint_p, ira_allocno_t a1 = ira_curr_regno_allocno_map[REGNO (reg1)]; ira_allocno_t a2 = ira_curr_regno_allocno_map[REGNO (reg2)]; - if (!allocnos_conflict_for_copy_p (a1, a2) && offset1 == offset2) + if (!allocnos_conflict_for_copy_p (a1, a2) + && offset1 == offset2 + && ordered_p (GET_MODE_PRECISION (ALLOCNO_MODE (a1)), + GET_MODE_PRECISION (ALLOCNO_MODE (a2)))) { cp = ira_add_allocno_copy (a1, a2, freq, constraint_p, insn, ira_curr_loop_tree_node); diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pr98791.c b/gcc/testsuite/gcc.target/aarch64/sve/pr98791.c new file mode 100644 index 0000000..cc1f183 --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/sve/pr98791.c @@ -0,0 +1,12 @@ +/* PR rtl-optimization/98791 */ +/* { dg-do compile } */ +/* { dg-options "-O -ftree-vectorize" } */ +#include <arm_sve.h> +extern char a[11]; +extern long b[]; +void f() { + for (int d; d < 10; d++) { + a[d] = svaddv(svptrue_b8(), svdup_u8(0)); + b[d] = 0; + } +} |