testsuite: riscv: disable scheduling for rvv/autovec/bug-3.c

Combine was prevented for some time from combining two ashifts when
the substituted insn couldn't be removed, and r15-7801 changed the
expectations to match.

Combine was later allowed to combine such insns, and the scheduler
reorders the insns so that the expected function body doesn't match.

I've added options to disable scheduling, and I've restored the
combine expectation.

for  gcc/testsuite/ChangeLog

	* gcc.target/riscv/rvv/autovec/bug-3.c: Disable scheduling,
	and restore expectation of slli combine.

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/bug-3.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/bug-3.c
index 2d5f4c2e0de0f4f7b559d957d2d2e543d21a31f3..6075d689cc4c3b76f19e56437ed30fcd8ec6be04 100644 (file)
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/bug-3.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/bug-3.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-march=rv64gcv_zvl512b -mabi=lp64d -mrvv-max-lmul=m8 -mrvv-vector-bits=scalable -fno-vect-cost-model -O2 -ffast-math" } */
+/* { dg-options "-march=rv64gcv_zvl512b -mabi=lp64d -mrvv-max-lmul=m8 -mrvv-vector-bits=scalable -fno-vect-cost-model -O2 -ffast-math -fno-schedule-insns -fno-schedule-insns2" } */
 /* { dg-final { check-function-bodies "**" "" } } */
 
 #define N 16
@@ -31,8 +31,7 @@ _Complex float res[N] =
 ** ...
 ** csrr\s+[atx][0-9]+,\s*vlenb
 ** slli\s+[atx][0-9]+,\s*[atx][0-9],\s*1
-** ...
-** slli\s+[atx][0-9]+,\s*[atx][0-9],\s*32
+** slli\s+[atx][0-9]+,\s*[atx][0-9],\s*33
 ** ...
 */
 void