Ping this patch. I think it's time to enable scalable vectorization by default and do the whole regression every time (except vect.exp that we didn't enable yet)
Update current FAILs status: Real FAILS (ICE and execution FAIL): FAIL: gcc.dg/pr70252.c (internal compiler error: in gimple_expand_vec_cond_expr, at gimple-isel.cc:284) FAIL: gcc.dg/pr70252.c (test for excess errors) FAIL: gcc.dg/pr92301.c execution test Robin is working on these 3 issues and will be solved soon. FAIL: g++.dg/torture/vshuf-v4df.C -O2 -flto -fno-use-linker-plugin -flto-partition=none (internal compiler error: in as_a, at machmode.h:381) FAIL: g++.dg/torture/vshuf-v4df.C -O2 -flto -fno-use-linker-plugin -flto-partition=none (test for excess errors) FAIL: g++.dg/torture/vshuf-v4df.C -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects (internal compiler error: in as_a, at machmode.h:381) FAIL: g++.dg/torture/vshuf-v4df.C -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects (test for excess errors) This is a long time known issue I have mentioned many times, we need help for LTO since it's caused by mode bits extension. The rest bogus FAILs: FAIL: gcc.dg/unroll-8.c scan-rtl-dump loop2_unroll "Not unrolling loop, doesn't roll" FAIL: gcc.dg/unroll-8.c scan-rtl-dump loop2_unroll "likely upper bound: 6" FAIL: gcc.dg/unroll-8.c scan-rtl-dump loop2_unroll "realistic bound: -1" FAIL: gcc.dg/var-expand1.c scan-rtl-dump loop2_unroll "Expanding Accumulator" FAIL: gcc.dg/tree-ssa/cunroll-16.c scan-tree-dump cunroll "optimized: loop with [0-9]+ iterations completely unrolled" FAIL: gcc.dg/tree-ssa/cunroll-16.c scan-tree-dump-not optimized "foo" FAIL: gcc.dg/tree-ssa/forwprop-40.c scan-tree-dump-times optimized "BIT_FIELD_REF" 0 FAIL: gcc.dg/tree-ssa/forwprop-40.c scan-tree-dump-times optimized "BIT_INSERT_EXPR" 0 FAIL: gcc.dg/tree-ssa/forwprop-41.c scan-tree-dump-times optimized "BIT_FIELD_REF" 0 FAIL: gcc.dg/tree-ssa/forwprop-41.c scan-tree-dump-times optimized "BIT_INSERT_EXPR" 1 FAIL: gcc.dg/tree-ssa/gen-vect-11b.c scan-tree-dump-times vect "vectorized 0 loops" 1 FAIL: gcc.dg/tree-ssa/gen-vect-11c.c scan-tree-dump-times vect "vectorized 0 loops" 1 FAIL: gcc.dg/tree-ssa/gen-vect-26.c scan-tree-dump-times vect "Alignment of access forced using peeling" 1 FAIL: gcc.dg/tree-ssa/gen-vect-28.c scan-tree-dump-times vect "Alignment of access forced using peeling" 1 FAIL: gcc.dg/tree-ssa/loop-bound-1.c scan-tree-dump ivopts "bounded by 254" FAIL: gcc.dg/tree-ssa/loop-bound-2.c scan-tree-dump ivopts "bounded by 254" FAIL: gcc.dg/tree-ssa/predcom-2.c scan-tree-dump-times pcom "Unrolling 2 times." 2 FAIL: gcc.dg/tree-ssa/predcom-4.c scan-tree-dump-times pcom "Combination" 1 FAIL: gcc.dg/tree-ssa/predcom-4.c scan-tree-dump-times pcom "Unrolling 3 times." 1 FAIL: gcc.dg/tree-ssa/predcom-5.c scan-tree-dump-times pcom "Combination" 2 FAIL: gcc.dg/tree-ssa/predcom-5.c scan-tree-dump-times pcom "Unrolling 3 times." 1 FAIL: gcc.dg/tree-ssa/predcom-9.c scan-tree-dump pcom "Executing predictive commoning without unrolling" FAIL: gcc.dg/tree-ssa/reassoc-46.c scan-tree-dump-times optimized "(?:vect_)?sum_[\\d._]+ = (?:(?:vect_)?_[\\d._]+ \\+ (?:vect_)?sum_[\\d._]+|(?:v ect_)?sum_[\\d._]+ \\+ (?:vect_)?_[\\d._]+)" 1 FAIL: gcc.dg/tree-ssa/scev-10.c scan-tree-dump-times ivopts " Type:\\tREFERENCE ADDRESS\n" 1 FAIL: gcc.dg/tree-ssa/scev-11.c scan-tree-dump-times ivopts " Type:\\tREFERENCE ADDRESS\n" 2 FAIL: gcc.dg/tree-ssa/scev-14.c scan-tree-dump ivopts "Overflowness wrto loop niter:\tNo-overflow" FAIL: gcc.dg/tree-ssa/scev-9.c scan-tree-dump-times ivopts " Type:\\tREFERENCE ADDRESS\n" 1 FAIL: gcc.dg/tree-ssa/split-path-11.c scan-tree-dump-times split-paths "join point for if-convertable half-diamond" 1 These are bogus dump FAILs and I have 100% confirm each of them, we are having same behavior as SVE. So is this patch ok for trunk ? juzhe.zh...@rivai.ai From: Juzhe-Zhong Date: 2023-09-07 15:28 To: gcc-patches CC: kito.cheng; kito.cheng; jeffreyalaw; rdapp.gcc; Juzhe-Zhong Subject: [PATCH] RISC-V: Enable RVV scalable vectorization by default[PR111311] This patch is not ready but they all will be fixed very soon. gcc/ChangeLog: * config/riscv/riscv.opt: Set default as scalable vectorization. --- gcc/config/riscv/riscv.opt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt index 98f342348b7..bf2eca08221 100644 --- a/gcc/config/riscv/riscv.opt +++ b/gcc/config/riscv/riscv.opt @@ -292,7 +292,7 @@ EnumValue Enum(riscv_autovec_preference) String(fixed-vlmax) Value(RVV_FIXED_VLMAX) -param=riscv-autovec-preference= -Target RejectNegative Joined Enum(riscv_autovec_preference) Var(riscv_autovec_preference) Init(NO_AUTOVEC) +Target RejectNegative Joined Enum(riscv_autovec_preference) Var(riscv_autovec_preference) Init(RVV_SCALABLE) -param=riscv-autovec-preference=<string> Set the preference of auto-vectorization in the RISC-V port. Enum -- 2.36.3
