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llvm-project/llvm/test/Transforms/LoopVectorize/X86/reduction-fastmath.ll
Amara Emerson 322d0afd87 [llvm][mlir] Promote the experimental reduction intrinsics to be first class intrinsics. 
This change renames the intrinsics to not have "experimental" in the name.

The autoupgrader will handle legacy intrinsics.

Relevant ML thread: http://lists.llvm.org/pipermail/llvm-dev/2020-April/140729.html

Differential Revision: https://reviews.llvm.org/D88787
2020-10-07 10:36:44 -07:00

264 lines
15 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -loop-vectorize < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define float @reduction_sum_float_ieee(i32 %n, float* %array) {
; CHECK-LABEL: @reduction_sum_float_ieee(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ENTRY_COND:%.*]] = icmp ne i32 0, 4096
; CHECK-NEXT: br i1 [[ENTRY_COND]], label [[LOOP_PREHEADER:%.*]], label [[LOOP_EXIT:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_INC:%.*]], [[LOOP]] ], [ 0, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[SUM:%.*]] = phi float [ [[SUM_INC:%.*]], [[LOOP]] ], [ 0.000000e+00, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[ADDRESS:%.*]] = getelementptr float, float* [[ARRAY:%.*]], i32 [[IDX]]
; CHECK-NEXT: [[VALUE:%.*]] = load float, float* [[ADDRESS]], align 4
; CHECK-NEXT: [[SUM_INC]] = fadd float [[SUM]], [[VALUE]]
; CHECK-NEXT: [[IDX_INC]] = add i32 [[IDX]], 1
; CHECK-NEXT: [[BE_COND:%.*]] = icmp ne i32 [[IDX_INC]], 4096
; CHECK-NEXT: br i1 [[BE_COND]], label [[LOOP]], label [[LOOP_EXIT_LOOPEXIT:%.*]]
; CHECK: loop.exit.loopexit:
; CHECK-NEXT: [[SUM_INC_LCSSA:%.*]] = phi float [ [[SUM_INC]], [[LOOP]] ]
; CHECK-NEXT: br label [[LOOP_EXIT]]
; CHECK: loop.exit:
; CHECK-NEXT: [[SUM_LCSSA:%.*]] = phi float [ 0.000000e+00, [[ENTRY:%.*]] ], [ [[SUM_INC_LCSSA]], [[LOOP_EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret float [[SUM_LCSSA]]
;
entry:
%entry.cond = icmp ne i32 0, 4096
br i1 %entry.cond, label %loop, label %loop.exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
%sum = phi float [ 0.000000e+00, %entry ], [ %sum.inc, %loop ]
%address = getelementptr float, float* %array, i32 %idx
%value = load float, float* %address
%sum.inc = fadd float %sum, %value
%idx.inc = add i32 %idx, 1
%be.cond = icmp ne i32 %idx.inc, 4096
br i1 %be.cond, label %loop, label %loop.exit
loop.exit:
%sum.lcssa = phi float [ %sum.inc, %loop ], [ 0.000000e+00, %entry ]
ret float %sum.lcssa
}
define float @reduction_sum_float_fastmath(i32 %n, float* %array) {
; CHECK-LABEL: @reduction_sum_float_fastmath(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ENTRY_COND:%.*]] = icmp ne i32 0, 4096
; CHECK-NEXT: br i1 [[ENTRY_COND]], label [[LOOP_PREHEADER:%.*]], label [[LOOP_EXIT:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; 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 <4 x float> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP8:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <4 x float> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP9:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr float, float* [[ARRAY:%.*]], i32 [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr float, float* [[ARRAY]], i32 [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr float, float* [[TMP2]], i32 0
; CHECK-NEXT: [[TMP5:%.*]] = bitcast float* [[TMP4]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP5]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr float, float* [[TMP2]], i32 4
; CHECK-NEXT: [[TMP7:%.*]] = bitcast float* [[TMP6]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x float>, <4 x float>* [[TMP7]], align 4
; CHECK-NEXT: [[TMP8]] = fadd fast <4 x float> [[VEC_PHI]], [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP9]] = fadd fast <4 x float> [[VEC_PHI1]], [[WIDE_LOAD2]]
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 8
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i32 [[INDEX_NEXT]], 4096
; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !0
; CHECK: middle.block:
; CHECK-NEXT: [[BIN_RDX:%.*]] = fadd fast <4 x float> [[TMP9]], [[TMP8]]
; CHECK-NEXT: [[TMP11:%.*]] = call fast float @llvm.vector.reduce.fadd.v4f32(float 0.000000e+00, <4 x float> [[BIN_RDX]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 4096, 4096
; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOP_EXIT_LOOPEXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi float [ 0.000000e+00, [[LOOP_PREHEADER]] ], [ [[TMP11]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_INC:%.*]], [[LOOP]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[SUM:%.*]] = phi float [ [[SUM_INC:%.*]], [[LOOP]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[ADDRESS:%.*]] = getelementptr float, float* [[ARRAY]], i32 [[IDX]]
; CHECK-NEXT: [[VALUE:%.*]] = load float, float* [[ADDRESS]], align 4
; CHECK-NEXT: [[SUM_INC]] = fadd fast float [[SUM]], [[VALUE]]
; CHECK-NEXT: [[IDX_INC]] = add i32 [[IDX]], 1
; CHECK-NEXT: [[BE_COND:%.*]] = icmp ne i32 [[IDX_INC]], 4096
; CHECK-NEXT: br i1 [[BE_COND]], label [[LOOP]], label [[LOOP_EXIT_LOOPEXIT]], !llvm.loop !2
; CHECK: loop.exit.loopexit:
; CHECK-NEXT: [[SUM_INC_LCSSA:%.*]] = phi float [ [[SUM_INC]], [[LOOP]] ], [ [[TMP11]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label [[LOOP_EXIT]]
; CHECK: loop.exit:
; CHECK-NEXT: [[SUM_LCSSA:%.*]] = phi float [ 0.000000e+00, [[ENTRY:%.*]] ], [ [[SUM_INC_LCSSA]], [[LOOP_EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret float [[SUM_LCSSA]]
;
entry:
%entry.cond = icmp ne i32 0, 4096
br i1 %entry.cond, label %loop, label %loop.exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
%sum = phi float [ 0.000000e+00, %entry ], [ %sum.inc, %loop ]
%address = getelementptr float, float* %array, i32 %idx
%value = load float, float* %address
%sum.inc = fadd fast float %sum, %value
%idx.inc = add i32 %idx, 1
%be.cond = icmp ne i32 %idx.inc, 4096
br i1 %be.cond, label %loop, label %loop.exit
loop.exit:
%sum.lcssa = phi float [ %sum.inc, %loop ], [ 0.000000e+00, %entry ]
ret float %sum.lcssa
}
define float @reduction_sum_float_only_reassoc(i32 %n, float* %array) {
; CHECK-LABEL: @reduction_sum_float_only_reassoc(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ENTRY_COND:%.*]] = icmp ne i32 0, 4096
; CHECK-NEXT: br i1 [[ENTRY_COND]], label [[LOOP_PREHEADER:%.*]], label [[LOOP_EXIT:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; 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 <4 x float> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP8:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <4 x float> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP9:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr float, float* [[ARRAY:%.*]], i32 [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr float, float* [[ARRAY]], i32 [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr float, float* [[TMP2]], i32 0
; CHECK-NEXT: [[TMP5:%.*]] = bitcast float* [[TMP4]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP5]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr float, float* [[TMP2]], i32 4
; CHECK-NEXT: [[TMP7:%.*]] = bitcast float* [[TMP6]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x float>, <4 x float>* [[TMP7]], align 4
; CHECK-NEXT: [[TMP8]] = fadd reassoc <4 x float> [[VEC_PHI]], [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP9]] = fadd reassoc <4 x float> [[VEC_PHI1]], [[WIDE_LOAD2]]
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 8
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i32 [[INDEX_NEXT]], 4096
; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !4
; CHECK: middle.block:
; CHECK-NEXT: [[BIN_RDX:%.*]] = fadd reassoc <4 x float> [[TMP9]], [[TMP8]]
; CHECK-NEXT: [[TMP11:%.*]] = call reassoc float @llvm.vector.reduce.fadd.v4f32(float 0.000000e+00, <4 x float> [[BIN_RDX]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 4096, 4096
; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOP_EXIT_LOOPEXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi float [ 0.000000e+00, [[LOOP_PREHEADER]] ], [ [[TMP11]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_INC:%.*]], [[LOOP]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[SUM:%.*]] = phi float [ [[SUM_INC:%.*]], [[LOOP]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[ADDRESS:%.*]] = getelementptr float, float* [[ARRAY]], i32 [[IDX]]
; CHECK-NEXT: [[VALUE:%.*]] = load float, float* [[ADDRESS]], align 4
; CHECK-NEXT: [[SUM_INC]] = fadd reassoc float [[SUM]], [[VALUE]]
; CHECK-NEXT: [[IDX_INC]] = add i32 [[IDX]], 1
; CHECK-NEXT: [[BE_COND:%.*]] = icmp ne i32 [[IDX_INC]], 4096
; CHECK-NEXT: br i1 [[BE_COND]], label [[LOOP]], label [[LOOP_EXIT_LOOPEXIT]], !llvm.loop !5
; CHECK: loop.exit.loopexit:
; CHECK-NEXT: [[SUM_INC_LCSSA:%.*]] = phi float [ [[SUM_INC]], [[LOOP]] ], [ [[TMP11]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label [[LOOP_EXIT]]
; CHECK: loop.exit:
; CHECK-NEXT: [[SUM_LCSSA:%.*]] = phi float [ 0.000000e+00, [[ENTRY:%.*]] ], [ [[SUM_INC_LCSSA]], [[LOOP_EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret float [[SUM_LCSSA]]
;
entry:
%entry.cond = icmp ne i32 0, 4096
br i1 %entry.cond, label %loop, label %loop.exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
%sum = phi float [ 0.000000e+00, %entry ], [ %sum.inc, %loop ]
%address = getelementptr float, float* %array, i32 %idx
%value = load float, float* %address
%sum.inc = fadd reassoc float %sum, %value
%idx.inc = add i32 %idx, 1
%be.cond = icmp ne i32 %idx.inc, 4096
br i1 %be.cond, label %loop, label %loop.exit
loop.exit:
%sum.lcssa = phi float [ %sum.inc, %loop ], [ 0.000000e+00, %entry ]
ret float %sum.lcssa
}
define float @reduction_sum_float_only_reassoc_and_contract(i32 %n, float* %array) {
; CHECK-LABEL: @reduction_sum_float_only_reassoc_and_contract(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ENTRY_COND:%.*]] = icmp ne i32 0, 4096
; CHECK-NEXT: br i1 [[ENTRY_COND]], label [[LOOP_PREHEADER:%.*]], label [[LOOP_EXIT:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; 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 <4 x float> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP8:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <4 x float> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP9:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0
; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr float, float* [[ARRAY:%.*]], i32 [[TMP0]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr float, float* [[ARRAY]], i32 [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr float, float* [[TMP2]], i32 0
; CHECK-NEXT: [[TMP5:%.*]] = bitcast float* [[TMP4]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, <4 x float>* [[TMP5]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr float, float* [[TMP2]], i32 4
; CHECK-NEXT: [[TMP7:%.*]] = bitcast float* [[TMP6]] to <4 x float>*
; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x float>, <4 x float>* [[TMP7]], align 4
; CHECK-NEXT: [[TMP8]] = fadd reassoc contract <4 x float> [[VEC_PHI]], [[WIDE_LOAD]]
; CHECK-NEXT: [[TMP9]] = fadd reassoc contract <4 x float> [[VEC_PHI1]], [[WIDE_LOAD2]]
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 8
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i32 [[INDEX_NEXT]], 4096
; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !6
; CHECK: middle.block:
; CHECK-NEXT: [[BIN_RDX:%.*]] = fadd reassoc contract <4 x float> [[TMP9]], [[TMP8]]
; CHECK-NEXT: [[TMP11:%.*]] = call reassoc contract float @llvm.vector.reduce.fadd.v4f32(float 0.000000e+00, <4 x float> [[BIN_RDX]])
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 4096, 4096
; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOP_EXIT_LOOPEXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 4096, [[MIDDLE_BLOCK]] ], [ 0, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi float [ 0.000000e+00, [[LOOP_PREHEADER]] ], [ [[TMP11]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IDX:%.*]] = phi i32 [ [[IDX_INC:%.*]], [[LOOP]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[SUM:%.*]] = phi float [ [[SUM_INC:%.*]], [[LOOP]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
; CHECK-NEXT: [[ADDRESS:%.*]] = getelementptr float, float* [[ARRAY]], i32 [[IDX]]
; CHECK-NEXT: [[VALUE:%.*]] = load float, float* [[ADDRESS]], align 4
; CHECK-NEXT: [[SUM_INC]] = fadd reassoc contract float [[SUM]], [[VALUE]]
; CHECK-NEXT: [[IDX_INC]] = add i32 [[IDX]], 1
; CHECK-NEXT: [[BE_COND:%.*]] = icmp ne i32 [[IDX_INC]], 4096
; CHECK-NEXT: br i1 [[BE_COND]], label [[LOOP]], label [[LOOP_EXIT_LOOPEXIT]], !llvm.loop !7
; CHECK: loop.exit.loopexit:
; CHECK-NEXT: [[SUM_INC_LCSSA:%.*]] = phi float [ [[SUM_INC]], [[LOOP]] ], [ [[TMP11]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: br label [[LOOP_EXIT]]
; CHECK: loop.exit:
; CHECK-NEXT: [[SUM_LCSSA:%.*]] = phi float [ 0.000000e+00, [[ENTRY:%.*]] ], [ [[SUM_INC_LCSSA]], [[LOOP_EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret float [[SUM_LCSSA]]
;
entry:
%entry.cond = icmp ne i32 0, 4096
br i1 %entry.cond, label %loop, label %loop.exit
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
%sum = phi float [ 0.000000e+00, %entry ], [ %sum.inc, %loop ]
%address = getelementptr float, float* %array, i32 %idx
%value = load float, float* %address
%sum.inc = fadd reassoc contract float %sum, %value
%idx.inc = add i32 %idx, 1
%be.cond = icmp ne i32 %idx.inc, 4096
br i1 %be.cond, label %loop, label %loop.exit
loop.exit:
%sum.lcssa = phi float [ %sum.inc, %loop ], [ 0.000000e+00, %entry ]
ret float %sum.lcssa
}
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