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llvm-project/llvm/test/Transforms/LoopVectorize/ARM/sphinx.ll
Florian Hahn 89ae085859
[VPlan] Remove VPVectorPointer for part 0 after unrolling. (#149735) 
VPVectorPointer for part 0 is just the pointer operand. Simplify it
after unrolling. This removes a large number of redundant GEPs with
index 0.

PR: https://github.com/llvm/llvm-project/pull/149735
2025-07-27 13:53:26 +01:00

154 lines
8.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=loop-vectorize -mtriple=thumbv8-unknown-unknown -mcpu=cortex-a53 -S | FileCheck %s
; This test is reduced from SPECFP 2006 482.sphinx.
; We expect vectorization with <2 x double> and <2 x float> ops.
; See https://bugs.llvm.org/show_bug.cgi?id=36280 for more details.
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
@a = external global i32
@v = external global i32
@mm = external global ptr
@vv = external global ptr
@ll = external global ptr
define i32 @test(ptr nocapture readonly %x) {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[T:%.*]] = load i32, ptr @v, align 8
; CHECK-NEXT: [[T1:%.*]] = load i32, ptr @a, align 4
; CHECK-NEXT: br label [[OUTERLOOP:%.*]]
; CHECK: outerloop:
; CHECK-NEXT: [[T2:%.*]] = phi i32 [ [[V17:%.*]], [[OUTEREND:%.*]] ], [ [[T1]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[J_0136:%.*]] = phi i32 [ [[INC144:%.*]], [[OUTEREND]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT: [[SCORE_1135:%.*]] = phi i32 [ [[CALL142:%.*]], [[OUTEREND]] ], [ -939524096, [[ENTRY]] ]
; CHECK-NEXT: [[T3:%.*]] = load ptr, ptr @mm, align 4
; CHECK-NEXT: [[ARRAYIDX109:%.*]] = getelementptr inbounds ptr, ptr [[T3]], i32 [[T2]]
; CHECK-NEXT: [[T4:%.*]] = load ptr, ptr [[ARRAYIDX109]], align 4
; CHECK-NEXT: [[T5:%.*]] = load ptr, ptr @vv, align 4
; CHECK-NEXT: [[ARRAYIDX111:%.*]] = getelementptr inbounds ptr, ptr [[T5]], i32 [[T2]]
; CHECK-NEXT: [[T6:%.*]] = load ptr, ptr [[ARRAYIDX111]], align 4
; CHECK-NEXT: [[T7:%.*]] = load ptr, ptr @ll, align 4
; CHECK-NEXT: [[ARRAYIDX113:%.*]] = getelementptr inbounds float, ptr [[T7]], i32 [[T2]]
; CHECK-NEXT: [[T8:%.*]] = load float, ptr [[ARRAYIDX113]], align 4
; CHECK-NEXT: [[CONV114:%.*]] = fpext float [[T8]] to double
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[T]], 2
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[T]], 2
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[T]], [[N_MOD_VF]]
; CHECK-NEXT: [[TMP0:%.*]] = insertelement <2 x double> zeroinitializer, double [[CONV114]], i32 0
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x double> [ [[TMP0]], [[VECTOR_PH]] ], [ [[TMP13:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, ptr [[X:%.*]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x float>, ptr [[TMP2]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, ptr [[T4]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <2 x float>, ptr [[TMP4]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = fsub fast <2 x float> [[WIDE_LOAD]], [[WIDE_LOAD1]]
; CHECK-NEXT: [[TMP7:%.*]] = fpext <2 x float> [[TMP6]] to <2 x double>
; CHECK-NEXT: [[TMP8:%.*]] = fmul fast <2 x double> [[TMP7]], [[TMP7]]
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds float, ptr [[T6]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <2 x float>, ptr [[TMP9]], align 4
; CHECK-NEXT: [[TMP11:%.*]] = fpext <2 x float> [[WIDE_LOAD2]] to <2 x double>
; CHECK-NEXT: [[TMP12:%.*]] = fmul fast <2 x double> [[TMP8]], [[TMP11]]
; CHECK-NEXT: [[TMP13]] = fsub fast <2 x double> [[VEC_PHI]], [[TMP12]]
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT: [[TMP14:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP15:%.*]] = call fast double @llvm.vector.reduce.fadd.v2f64(double 0.000000e+00, <2 x double> [[TMP13]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[T]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[OUTEREND]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[OUTERLOOP]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi double [ [[TMP15]], [[MIDDLE_BLOCK]] ], [ [[CONV114]], [[OUTERLOOP]] ]
; CHECK-NEXT: br label [[INNERLOOP:%.*]]
; CHECK: innerloop:
; CHECK-NEXT: [[I_2132:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC129:%.*]], [[INNERLOOP]] ]
; CHECK-NEXT: [[DVAL1_4131:%.*]] = phi double [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[SUB127:%.*]], [[INNERLOOP]] ]
; CHECK-NEXT: [[ARRAYIDX119:%.*]] = getelementptr inbounds float, ptr [[X]], i32 [[I_2132]]
; CHECK-NEXT: [[T9:%.*]] = load float, ptr [[ARRAYIDX119]], align 4
; CHECK-NEXT: [[ARRAYIDX120:%.*]] = getelementptr inbounds float, ptr [[T4]], i32 [[I_2132]]
; CHECK-NEXT: [[T10:%.*]] = load float, ptr [[ARRAYIDX120]], align 4
; CHECK-NEXT: [[SUB121:%.*]] = fsub fast float [[T9]], [[T10]]
; CHECK-NEXT: [[CONV122:%.*]] = fpext float [[SUB121]] to double
; CHECK-NEXT: [[MUL123:%.*]] = fmul fast double [[CONV122]], [[CONV122]]
; CHECK-NEXT: [[ARRAYIDX124:%.*]] = getelementptr inbounds float, ptr [[T6]], i32 [[I_2132]]
; CHECK-NEXT: [[T11:%.*]] = load float, ptr [[ARRAYIDX124]], align 4
; CHECK-NEXT: [[CONV125:%.*]] = fpext float [[T11]] to double
; CHECK-NEXT: [[MUL126:%.*]] = fmul fast double [[MUL123]], [[CONV125]]
; CHECK-NEXT: [[SUB127]] = fsub fast double [[DVAL1_4131]], [[MUL126]]
; CHECK-NEXT: [[INC129]] = add nuw nsw i32 [[I_2132]], 1
; CHECK-NEXT: [[EXITCOND143:%.*]] = icmp eq i32 [[INC129]], [[T]]
; CHECK-NEXT: br i1 [[EXITCOND143]], label [[OUTEREND]], label [[INNERLOOP]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: outerend:
; CHECK-NEXT: [[SUB127_LCSSA:%.*]] = phi double [ [[SUB127]], [[INNERLOOP]] ], [ [[TMP15]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: [[CONV138:%.*]] = fptosi double [[SUB127_LCSSA]] to i32
; CHECK-NEXT: [[CALL142]] = add nuw nsw i32 [[SCORE_1135]], [[CONV138]]
; CHECK-NEXT: [[INC144]] = add nuw nsw i32 [[J_0136]], 1
; CHECK-NEXT: [[ARRAYIDX102:%.*]] = getelementptr inbounds i32, ptr @a, i32 [[INC144]]
; CHECK-NEXT: [[V17]] = load i32, ptr [[ARRAYIDX102]], align 4
; CHECK-NEXT: [[CMP103:%.*]] = icmp sgt i32 [[V17]], -1
; CHECK-NEXT: br i1 [[CMP103]], label [[OUTERLOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[CALL142]]
;
entry:
%t = load i32, ptr @v, align 8
%t1 = load i32, ptr @a, align 4
br label %outerloop
outerloop:
%t2 = phi i32 [ %v17, %outerend ], [ %t1, %entry ]
%j.0136 = phi i32 [ %inc144, %outerend ], [ 0, %entry ]
%score.1135 = phi i32 [ %call142, %outerend ], [ -939524096, %entry ]
%t3 = load ptr, ptr @mm, align 4
%arrayidx109 = getelementptr inbounds ptr, ptr %t3, i32 %t2
%t4 = load ptr, ptr %arrayidx109, align 4
%t5 = load ptr, ptr @vv, align 4
%arrayidx111 = getelementptr inbounds ptr, ptr %t5, i32 %t2
%t6 = load ptr, ptr %arrayidx111, align 4
%t7 = load ptr, ptr @ll, align 4
%arrayidx113 = getelementptr inbounds float, ptr %t7, i32 %t2
%t8 = load float, ptr %arrayidx113, align 4
%conv114 = fpext float %t8 to double
br label %innerloop
innerloop:
%i.2132 = phi i32 [ 0, %outerloop ], [ %inc129, %innerloop ]
%dval1.4131 = phi double [ %conv114, %outerloop ], [ %sub127, %innerloop ]
%arrayidx119 = getelementptr inbounds float, ptr %x, i32 %i.2132
%t9 = load float, ptr %arrayidx119, align 4
%arrayidx120 = getelementptr inbounds float, ptr %t4, i32 %i.2132
%t10 = load float, ptr %arrayidx120, align 4
%sub121 = fsub fast float %t9, %t10
%conv122 = fpext float %sub121 to double
%mul123 = fmul fast double %conv122, %conv122
%arrayidx124 = getelementptr inbounds float, ptr %t6, i32 %i.2132
%t11 = load float, ptr %arrayidx124, align 4
%conv125 = fpext float %t11 to double
%mul126 = fmul fast double %mul123, %conv125
%sub127 = fsub fast double %dval1.4131, %mul126
%inc129 = add nuw nsw i32 %i.2132, 1
%exitcond143 = icmp eq i32 %inc129, %t
br i1 %exitcond143, label %outerend, label %innerloop
outerend:
%sub127.lcssa = phi double [ %sub127, %innerloop ]
%conv138 = fptosi double %sub127.lcssa to i32
%call142 = add nuw nsw i32 %score.1135, %conv138
%inc144 = add nuw nsw i32 %j.0136, 1
%arrayidx102 = getelementptr inbounds i32, ptr @a, i32 %inc144
%v17 = load i32, ptr %arrayidx102, align 4
%cmp103 = icmp sgt i32 %v17, -1
br i1 %cmp103, label %outerloop, label %exit
exit:
ret i32 %call142
}
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