diff --git a/llvm/test/Transforms/LoopVectorize/RISCV/inloop-reduction.ll b/llvm/test/Transforms/LoopVectorize/RISCV/inloop-reduction.ll new file mode 100644 index 00000000000000..ecac838b23c011 --- /dev/null +++ b/llvm/test/Transforms/LoopVectorize/RISCV/inloop-reduction.ll @@ -0,0 +1,169 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -mtriple riscv64-linux-gnu -mattr=+v,+d -loop-vectorize < %s -S -o - | FileCheck %s -check-prefix=OUTLOOP +; RUN: opt -mtriple riscv64-linux-gnu -mattr=+v,+d -loop-vectorize -prefer-inloop-reductions < %s -S -o - | FileCheck %s -check-prefix=INLOOP + + +target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128" +target triple = "riscv64" + +define i32 @add_i16_i32(i16* nocapture readonly %x, i32 %n) { +; OUTLOOP-LABEL: @add_i16_i32( +; OUTLOOP-NEXT: entry: +; OUTLOOP-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[N:%.*]], 0 +; OUTLOOP-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] +; OUTLOOP: for.body.preheader: +; OUTLOOP-NEXT: [[TMP0:%.*]] = call i32 @llvm.vscale.i32() +; OUTLOOP-NEXT: [[TMP1:%.*]] = mul i32 [[TMP0]], 4 +; OUTLOOP-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], [[TMP1]] +; OUTLOOP-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] +; OUTLOOP: vector.ph: +; OUTLOOP-NEXT: [[TMP2:%.*]] = call i32 @llvm.vscale.i32() +; OUTLOOP-NEXT: [[TMP3:%.*]] = mul i32 [[TMP2]], 4 +; OUTLOOP-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N]], [[TMP3]] +; OUTLOOP-NEXT: [[N_VEC:%.*]] = sub i32 [[N]], [[N_MOD_VF]] +; OUTLOOP-NEXT: br label [[VECTOR_BODY:%.*]] +; OUTLOOP: vector.body: +; OUTLOOP-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] +; OUTLOOP-NEXT: [[VEC_PHI:%.*]] = phi [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP20:%.*]], [[VECTOR_BODY]] ] +; OUTLOOP-NEXT: [[VEC_PHI1:%.*]] = phi [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP21:%.*]], [[VECTOR_BODY]] ] +; OUTLOOP-NEXT: [[TMP4:%.*]] = add i32 [[INDEX]], 0 +; OUTLOOP-NEXT: [[TMP5:%.*]] = call i32 @llvm.vscale.i32() +; OUTLOOP-NEXT: [[TMP6:%.*]] = mul i32 [[TMP5]], 2 +; OUTLOOP-NEXT: [[TMP7:%.*]] = add i32 [[TMP6]], 0 +; OUTLOOP-NEXT: [[TMP8:%.*]] = mul i32 [[TMP7]], 1 +; OUTLOOP-NEXT: [[TMP9:%.*]] = add i32 [[INDEX]], [[TMP8]] +; OUTLOOP-NEXT: [[TMP10:%.*]] = getelementptr inbounds i16, i16* [[X:%.*]], i32 [[TMP4]] +; OUTLOOP-NEXT: [[TMP11:%.*]] = getelementptr inbounds i16, i16* [[X]], i32 [[TMP9]] +; OUTLOOP-NEXT: [[TMP12:%.*]] = getelementptr inbounds i16, i16* [[TMP10]], i32 0 +; OUTLOOP-NEXT: [[TMP13:%.*]] = bitcast i16* [[TMP12]] to * +; OUTLOOP-NEXT: [[WIDE_LOAD:%.*]] = load , * [[TMP13]], align 2 +; OUTLOOP-NEXT: [[TMP14:%.*]] = call i32 @llvm.vscale.i32() +; OUTLOOP-NEXT: [[TMP15:%.*]] = mul i32 [[TMP14]], 2 +; OUTLOOP-NEXT: [[TMP16:%.*]] = getelementptr inbounds i16, i16* [[TMP10]], i32 [[TMP15]] +; OUTLOOP-NEXT: [[TMP17:%.*]] = bitcast i16* [[TMP16]] to * +; OUTLOOP-NEXT: [[WIDE_LOAD2:%.*]] = load , * [[TMP17]], align 2 +; OUTLOOP-NEXT: [[TMP18:%.*]] = sext [[WIDE_LOAD]] to +; OUTLOOP-NEXT: [[TMP19:%.*]] = sext [[WIDE_LOAD2]] to +; OUTLOOP-NEXT: [[TMP20]] = add [[VEC_PHI]], [[TMP18]] +; OUTLOOP-NEXT: [[TMP21]] = add [[VEC_PHI1]], [[TMP19]] +; OUTLOOP-NEXT: [[TMP22:%.*]] = call i32 @llvm.vscale.i32() +; OUTLOOP-NEXT: [[TMP23:%.*]] = mul i32 [[TMP22]], 4 +; OUTLOOP-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], [[TMP23]] +; OUTLOOP-NEXT: [[TMP24:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] +; OUTLOOP-NEXT: br i1 [[TMP24]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] +; OUTLOOP: middle.block: +; OUTLOOP-NEXT: [[BIN_RDX:%.*]] = add [[TMP21]], [[TMP20]] +; OUTLOOP-NEXT: [[TMP25:%.*]] = call i32 @llvm.vector.reduce.add.nxv2i32( [[BIN_RDX]]) +; OUTLOOP-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]] +; OUTLOOP-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[SCALAR_PH]] +; OUTLOOP: scalar.ph: +; OUTLOOP-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_PREHEADER]] ] +; OUTLOOP-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[TMP25]], [[MIDDLE_BLOCK]] ] +; OUTLOOP-NEXT: br label [[FOR_BODY:%.*]] +; OUTLOOP: for.body: +; OUTLOOP-NEXT: [[I_08:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] +; OUTLOOP-NEXT: [[R_07:%.*]] = phi i32 [ [[ADD:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ] +; OUTLOOP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i16, i16* [[X]], i32 [[I_08]] +; OUTLOOP-NEXT: [[TMP26:%.*]] = load i16, i16* [[ARRAYIDX]], align 2 +; OUTLOOP-NEXT: [[CONV:%.*]] = sext i16 [[TMP26]] to i32 +; OUTLOOP-NEXT: [[ADD]] = add nsw i32 [[R_07]], [[CONV]] +; OUTLOOP-NEXT: [[INC]] = add nuw nsw i32 [[I_08]], 1 +; OUTLOOP-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[N]] +; OUTLOOP-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP_LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]] +; OUTLOOP: for.cond.cleanup.loopexit: +; OUTLOOP-NEXT: [[ADD_LCSSA:%.*]] = phi i32 [ [[ADD]], [[FOR_BODY]] ], [ [[TMP25]], [[MIDDLE_BLOCK]] ] +; OUTLOOP-NEXT: br label [[FOR_COND_CLEANUP]] +; OUTLOOP: for.cond.cleanup: +; OUTLOOP-NEXT: [[R_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD_LCSSA]], [[FOR_COND_CLEANUP_LOOPEXIT]] ] +; OUTLOOP-NEXT: ret i32 [[R_0_LCSSA]] +; +; INLOOP-LABEL: @add_i16_i32( +; INLOOP-NEXT: entry: +; INLOOP-NEXT: [[CMP6:%.*]] = icmp sgt i32 [[N:%.*]], 0 +; INLOOP-NEXT: br i1 [[CMP6]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] +; INLOOP: for.body.preheader: +; INLOOP-NEXT: [[TMP0:%.*]] = call i32 @llvm.vscale.i32() +; INLOOP-NEXT: [[TMP1:%.*]] = mul i32 [[TMP0]], 8 +; INLOOP-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N]], [[TMP1]] +; INLOOP-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] +; INLOOP: vector.ph: +; INLOOP-NEXT: [[TMP2:%.*]] = call i32 @llvm.vscale.i32() +; INLOOP-NEXT: [[TMP3:%.*]] = mul i32 [[TMP2]], 8 +; INLOOP-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N]], [[TMP3]] +; INLOOP-NEXT: [[N_VEC:%.*]] = sub i32 [[N]], [[N_MOD_VF]] +; INLOOP-NEXT: br label [[VECTOR_BODY:%.*]] +; INLOOP: vector.body: +; INLOOP-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] +; INLOOP-NEXT: [[VEC_PHI:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP21:%.*]], [[VECTOR_BODY]] ] +; INLOOP-NEXT: [[VEC_PHI1:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP23:%.*]], [[VECTOR_BODY]] ] +; INLOOP-NEXT: [[TMP4:%.*]] = add i32 [[INDEX]], 0 +; INLOOP-NEXT: [[TMP5:%.*]] = call i32 @llvm.vscale.i32() +; INLOOP-NEXT: [[TMP6:%.*]] = mul i32 [[TMP5]], 4 +; INLOOP-NEXT: [[TMP7:%.*]] = add i32 [[TMP6]], 0 +; INLOOP-NEXT: [[TMP8:%.*]] = mul i32 [[TMP7]], 1 +; INLOOP-NEXT: [[TMP9:%.*]] = add i32 [[INDEX]], [[TMP8]] +; INLOOP-NEXT: [[TMP10:%.*]] = getelementptr inbounds i16, i16* [[X:%.*]], i32 [[TMP4]] +; INLOOP-NEXT: [[TMP11:%.*]] = getelementptr inbounds i16, i16* [[X]], i32 [[TMP9]] +; INLOOP-NEXT: [[TMP12:%.*]] = getelementptr inbounds i16, i16* [[TMP10]], i32 0 +; INLOOP-NEXT: [[TMP13:%.*]] = bitcast i16* [[TMP12]] to * +; INLOOP-NEXT: [[WIDE_LOAD:%.*]] = load , * [[TMP13]], align 2 +; INLOOP-NEXT: [[TMP14:%.*]] = call i32 @llvm.vscale.i32() +; INLOOP-NEXT: [[TMP15:%.*]] = mul i32 [[TMP14]], 4 +; INLOOP-NEXT: [[TMP16:%.*]] = getelementptr inbounds i16, i16* [[TMP10]], i32 [[TMP15]] +; INLOOP-NEXT: [[TMP17:%.*]] = bitcast i16* [[TMP16]] to * +; INLOOP-NEXT: [[WIDE_LOAD2:%.*]] = load , * [[TMP17]], align 2 +; INLOOP-NEXT: [[TMP18:%.*]] = sext [[WIDE_LOAD]] to +; INLOOP-NEXT: [[TMP19:%.*]] = sext [[WIDE_LOAD2]] to +; INLOOP-NEXT: [[TMP20:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32( [[TMP18]]) +; INLOOP-NEXT: [[TMP21]] = add i32 [[TMP20]], [[VEC_PHI]] +; INLOOP-NEXT: [[TMP22:%.*]] = call i32 @llvm.vector.reduce.add.nxv4i32( [[TMP19]]) +; INLOOP-NEXT: [[TMP23]] = add i32 [[TMP22]], [[VEC_PHI1]] +; INLOOP-NEXT: [[TMP24:%.*]] = call i32 @llvm.vscale.i32() +; INLOOP-NEXT: [[TMP25:%.*]] = mul i32 [[TMP24]], 8 +; INLOOP-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], [[TMP25]] +; INLOOP-NEXT: [[TMP26:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] +; INLOOP-NEXT: br i1 [[TMP26]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] +; INLOOP: middle.block: +; INLOOP-NEXT: [[BIN_RDX:%.*]] = add i32 [[TMP23]], [[TMP21]] +; INLOOP-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]] +; INLOOP-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[SCALAR_PH]] +; INLOOP: scalar.ph: +; INLOOP-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[FOR_BODY_PREHEADER]] ] +; INLOOP-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[BIN_RDX]], [[MIDDLE_BLOCK]] ] +; INLOOP-NEXT: br label [[FOR_BODY:%.*]] +; INLOOP: for.body: +; INLOOP-NEXT: [[I_08:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] +; INLOOP-NEXT: [[R_07:%.*]] = phi i32 [ [[ADD:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ] +; INLOOP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i16, i16* [[X]], i32 [[I_08]] +; INLOOP-NEXT: [[TMP27:%.*]] = load i16, i16* [[ARRAYIDX]], align 2 +; INLOOP-NEXT: [[CONV:%.*]] = sext i16 [[TMP27]] to i32 +; INLOOP-NEXT: [[ADD]] = add nsw i32 [[R_07]], [[CONV]] +; INLOOP-NEXT: [[INC]] = add nuw nsw i32 [[I_08]], 1 +; INLOOP-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[N]] +; INLOOP-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP_LOOPEXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]] +; INLOOP: for.cond.cleanup.loopexit: +; INLOOP-NEXT: [[ADD_LCSSA:%.*]] = phi i32 [ [[ADD]], [[FOR_BODY]] ], [ [[BIN_RDX]], [[MIDDLE_BLOCK]] ] +; INLOOP-NEXT: br label [[FOR_COND_CLEANUP]] +; INLOOP: for.cond.cleanup: +; INLOOP-NEXT: [[R_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[ADD_LCSSA]], [[FOR_COND_CLEANUP_LOOPEXIT]] ] +; INLOOP-NEXT: ret i32 [[R_0_LCSSA]] +; +entry: + %cmp6 = icmp sgt i32 %n, 0 + br i1 %cmp6, label %for.body, label %for.cond.cleanup + +for.body: ; preds = %entry, %for.body + %i.08 = phi i32 [ %inc, %for.body ], [ 0, %entry ] + %r.07 = phi i32 [ %add, %for.body ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i16, i16* %x, i32 %i.08 + %0 = load i16, i16* %arrayidx, align 2 + %conv = sext i16 %0 to i32 + %add = add nsw i32 %r.07, %conv + %inc = add nuw nsw i32 %i.08, 1 + %exitcond = icmp eq i32 %inc, %n + br i1 %exitcond, label %for.cond.cleanup, label %for.body + +for.cond.cleanup: ; preds = %for.body, %entry + %r.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] + ret i32 %r.0.lcssa +}