104b7c624e
Parameters marked as uniform take a scalar value, assuming the value is invariant in the scalar loop.
134 lines
7.3 KiB
LLVM
134 lines
7.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt < %s -passes=loop-vectorize,instcombine -force-vector-width=2 -force-vector-interleave=1 -S | FileCheck %s
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; A call whose argument can remain a scalar for a vectorized function variant
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; with a uniform argument because it's loop invariant
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define void @test_uniform(ptr noalias %dst, ptr readonly %src, i64 %uniform , i64 %n) {
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; CHECK-LABEL: define void @test_uniform
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; CHECK-SAME: (ptr noalias [[DST:%.*]], ptr readonly [[SRC:%.*]], i64 [[UNIFORM:%.*]], i64 [[N:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
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; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], -2
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = getelementptr double, ptr [[SRC]], i64 [[INDEX]]
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x double>, ptr [[TMP0]], align 8
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; CHECK-NEXT: [[TMP1:%.*]] = call <2 x double> @foo_uniform(<2 x double> [[WIDE_LOAD]], i64 [[UNIFORM]])
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds double, ptr [[DST]], i64 [[INDEX]]
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; CHECK-NEXT: store <2 x double> [[TMP1]], ptr [[TMP2]], align 8
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP3]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[N]]
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; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[GEPSRC:%.*]] = getelementptr double, ptr [[SRC]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[DATA:%.*]] = load double, ptr [[GEPSRC]], align 8
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; CHECK-NEXT: [[CALL:%.*]] = call double @foo(double [[DATA]], i64 [[UNIFORM]]) #[[ATTR0:[0-9]+]]
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; CHECK-NEXT: [[GEPDST:%.*]] = getelementptr inbounds double, ptr [[DST]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: store double [[CALL]], ptr [[GEPDST]], align 8
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], [[N]]
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%gepsrc = getelementptr double, ptr %src, i64 %indvars.iv
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%data = load double, ptr %gepsrc, align 8
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%call = call double @foo(double %data, i64 %uniform) #0
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%gepdst = getelementptr inbounds double, ptr %dst, i64 %indvars.iv
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store double %call, ptr %gepdst
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, %n
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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for.cond.cleanup:
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ret void
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}
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; If the parameter is not uniform, then we can't use the vector variant and
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; must fall back to scalarization.
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define void @test_uniform_not_invariant(ptr noalias %dst, ptr readonly %src, i64 %n) {
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; CHECK-LABEL: define void @test_uniform_not_invariant
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; CHECK-SAME: (ptr noalias [[DST:%.*]], ptr readonly [[SRC:%.*]], i64 [[N:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 2
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; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], -2
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = or disjoint i64 [[INDEX]], 1
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr double, ptr [[SRC]], i64 [[INDEX]]
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x double>, ptr [[TMP1]], align 8
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; CHECK-NEXT: [[TMP2:%.*]] = extractelement <2 x double> [[WIDE_LOAD]], i64 0
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; CHECK-NEXT: [[TMP3:%.*]] = call double @foo(double [[TMP2]], i64 [[INDEX]]) #[[ATTR0]]
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; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[WIDE_LOAD]], i64 1
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; CHECK-NEXT: [[TMP5:%.*]] = call double @foo(double [[TMP4]], i64 [[TMP0]]) #[[ATTR0]]
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; CHECK-NEXT: [[TMP6:%.*]] = insertelement <2 x double> poison, double [[TMP3]], i64 0
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; CHECK-NEXT: [[TMP7:%.*]] = insertelement <2 x double> [[TMP6]], double [[TMP5]], i64 1
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds double, ptr [[DST]], i64 [[INDEX]]
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; CHECK-NEXT: store <2 x double> [[TMP7]], ptr [[TMP8]], align 8
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; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
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; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
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; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_VEC]], [[N]]
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; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[GEPSRC:%.*]] = getelementptr double, ptr [[SRC]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[DATA:%.*]] = load double, ptr [[GEPSRC]], align 8
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; CHECK-NEXT: [[CALL:%.*]] = call double @foo(double [[DATA]], i64 [[INDVARS_IV]]) #[[ATTR0]]
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; CHECK-NEXT: [[GEPDST:%.*]] = getelementptr inbounds double, ptr [[DST]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: store double [[CALL]], ptr [[GEPDST]], align 8
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], [[N]]
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%gepsrc = getelementptr double, ptr %src, i64 %indvars.iv
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%data = load double, ptr %gepsrc, align 8
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%call = call double @foo(double %data, i64 %indvars.iv) #0
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%gepdst = getelementptr inbounds double, ptr %dst, i64 %indvars.iv
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store double %call, ptr %gepdst
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, %n
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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for.cond.cleanup:
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ret void
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}
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; Scalar functions
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declare double @foo(double, i64)
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; Vector variants
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declare <2 x double> @foo_uniform(<2 x double>, i64)
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; Mappings
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attributes #0 = { nounwind "vector-function-abi-variant"="_ZGV_LLVM_N2vu_foo(foo_uniform)" }
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