* [PATCH] tree-optimization/101158 - adjust SLP call matching sequence
@ 2021-06-22 9:00 Richard Biener
0 siblings, 0 replies; only message in thread
From: Richard Biener @ 2021-06-22 9:00 UTC (permalink / raw)
To: gcc-patches
This moves the check for same operands after verifying we're
facing compatible calls.
Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.
2021-06-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/101158
* tree-vect-slp.c (vect_build_slp_tree_1): Move same operand
checking after checking for matching operation.
* gfortran.dg/pr101158.f90: New testcase.
---
gcc/testsuite/gfortran.dg/pr101158.f90 | 25 +++++++++++++++++++++
gcc/tree-vect-slp.c | 31 +++++++++++++-------------
2 files changed, 41 insertions(+), 15 deletions(-)
create mode 100644 gcc/testsuite/gfortran.dg/pr101158.f90
diff --git a/gcc/testsuite/gfortran.dg/pr101158.f90 b/gcc/testsuite/gfortran.dg/pr101158.f90
new file mode 100644
index 00000000000..9a4d9a2d7ae
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr101158.f90
@@ -0,0 +1,25 @@
+! { dg-do compile }
+! { dg-options "-O1 -ftree-slp-vectorize -fwrapv" }
+! { dg-additional-options "-march=armv8-a+sve" { target aarch64-*-* } }
+
+subroutine sprpl5 (left)
+ implicit none
+
+ integer :: left
+ integer :: avail1, avail2, delx1, delx2, i2, ic
+
+ ic = left
+ delx1 = ic / 2
+ delx2 = delx1 + 1
+ i2 = ic + delx2
+ avail1 = i2
+ avail2 = 1
+
+ do delx1 = 1, 2
+ ic = left + nint (real (left) / 2)
+ if (ic .ge. avail1) avail1 = ic + 1
+
+ i2 = ic + delx2
+ if (i2 .le. avail2) avail2 = i2 + 1
+ end do
+end subroutine sprpl5
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index b9f91e7c7ba..6c98acbe722 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -1177,21 +1177,6 @@ vect_build_slp_tree_1 (vec_info *vinfo, unsigned char *swap,
continue;
}
- if (need_same_oprnds)
- {
- tree other_op1 = (call_stmt
- ? gimple_call_arg (call_stmt, 1)
- : gimple_assign_rhs2 (stmt));
- if (!operand_equal_p (first_op1, other_op1, 0))
- {
- if (dump_enabled_p ())
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
- "Build SLP failed: different shift "
- "arguments in %G", stmt);
- /* Mismatch. */
- continue;
- }
- }
if (!load_p
&& first_stmt_code == BIT_FIELD_REF
&& (TREE_OPERAND (gimple_assign_rhs1 (first_stmt_info->stmt), 0)
@@ -1231,6 +1216,22 @@ vect_build_slp_tree_1 (vec_info *vinfo, unsigned char *swap,
continue;
}
+ if (need_same_oprnds)
+ {
+ tree other_op1 = (call_stmt
+ ? gimple_call_arg (call_stmt, 1)
+ : gimple_assign_rhs2 (stmt));
+ if (!operand_equal_p (first_op1, other_op1, 0))
+ {
+ if (dump_enabled_p ())
+ dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
+ "Build SLP failed: different shift "
+ "arguments in %G", stmt);
+ /* Mismatch. */
+ continue;
+ }
+ }
+
if (!types_compatible_p (vectype, *node_vectype))
{
if (dump_enabled_p ())
--
2.26.2
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