forked from OSchip/llvm-project
87 lines
3.3 KiB
LLVM
87 lines
3.3 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -instcombine -debug-only=loop-vectorize -disable-output -print-after=instcombine 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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; CHECK-LABEL: phi_two_incoming_values
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; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]
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; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ]
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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: [[WIDE_LOAD:%.*]] = load <2 x i32>, <2 x i32>* {{.*}}
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; CHECK: [[TMP5:%.*]] = icmp sgt <2 x i32> [[WIDE_LOAD]], zeroinitializer
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; CHECK-NEXT: [[TMP6:%.*]] = zext <2 x i1> [[TMP5]] to <2 x i32>
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; CHECK-NEXT: [[PREDPHI:%.*]] = add <2 x i32> [[WIDE_LOAD]], [[TMP6]]
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; CHECK: store <2 x i32> [[PREDPHI]], <2 x i32>* {{.*}}
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
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;
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define void @phi_two_incoming_values(i32* %a, i32* %b, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]
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%tmp0 = getelementptr inbounds i32, i32* %a, i64 %i
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%tmp1 = load i32, i32* %tmp0, align 4
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%tmp2 = getelementptr inbounds i32, i32* %b, i64 %i
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%tmp3 = icmp sgt i32 %tmp1, 0
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br i1 %tmp3, label %if.then, label %if.end
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if.then:
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%tmp4 = add i32 %tmp1, 1
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br label %if.end
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if.end:
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%tmp5 = phi i32 [ %tmp1, %for.body ], [ %tmp4, %if.then ]
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store i32 %tmp5, i32* %tmp2, align 4
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%i.next = add i64 %i, 1
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%cond = icmp eq i64 %i, %n
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br i1 %cond, label %for.end, label %for.body
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for.end:
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ret void
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}
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; CHECK-LABEL: phi_three_incoming_values
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; CHECK: LV: Found an estimated cost of 1 for VF 2 For instruction: %i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]
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; CHECK: LV: Found an estimated cost of 2 for VF 2 For instruction: %tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ]
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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: [[PREDPHI:%.*]] = select <2 x i1> {{.*}}, <2 x i32> <i32 3, i32 3>, <2 x i32> <i32 9, i32 9>
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; CHECK: [[PREDPHI7:%.*]] = select <2 x i1> {{.*}}, <2 x i32> {{.*}}, <2 x i32> [[PREDPHI]]
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; CHECK: store <2 x i32> [[PREDPHI7]], <2 x i32>* {{.*}}
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
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;
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define void @phi_three_incoming_values(i32* %a, i32* %b, i64 %n) {
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ %i.next, %if.end ], [ 0, %entry ]
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%tmp0 = getelementptr inbounds i32, i32* %a, i64 %i
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%tmp1 = load i32, i32* %tmp0, align 4
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%tmp2 = getelementptr inbounds i32, i32* %b, i64 %i
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%tmp3 = load i32, i32* %tmp2, align 4
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%tmp4 = icmp sgt i32 %tmp1, %tmp3
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br i1 %tmp4, label %if.then, label %if.end
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if.then:
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%tmp5 = icmp sgt i32 %tmp1, 19
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br i1 %tmp5, label %if.end, label %if.else
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if.else:
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%tmp6 = icmp slt i32 %tmp3, 4
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%tmp7 = select i1 %tmp6, i32 4, i32 5
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br label %if.end
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if.end:
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%tmp8 = phi i32 [ 9, %for.body ], [ 3, %if.then ], [ %tmp7, %if.else ]
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store i32 %tmp8, i32* %tmp0, align 4
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%i.next = add i64 %i, 1
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%cond = icmp eq i64 %i, %n
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br i1 %cond, label %for.end, label %for.body
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for.end:
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ret void
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}
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