172 lines
6.0 KiB
LLVM
172 lines
6.0 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=2 -force-vector-width=4 -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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; Make sure consecutive vector generates correct negative indices.
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; PR15882
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %offset.idx = sub i64 %startval, %index
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; CHECK: %[[a0:.+]] = add i64 %offset.idx, 0
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; CHECK: %[[a1:.+]] = add i64 %offset.idx, -1
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; CHECK: %[[a2:.+]] = add i64 %offset.idx, -2
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; CHECK: %[[a3:.+]] = add i64 %offset.idx, -3
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; CHECK: %[[a4:.+]] = add i64 %offset.idx, -4
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; CHECK: %[[a5:.+]] = add i64 %offset.idx, -5
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; CHECK: %[[a6:.+]] = add i64 %offset.idx, -6
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; CHECK: %[[a7:.+]] = add i64 %offset.idx, -7
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define i32 @reverse_induction_i64(i64 %startval, i32 * %ptr) {
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entry:
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br label %for.body
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for.body:
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%add.i7 = phi i64 [ %startval, %entry ], [ %add.i, %for.body ]
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%i.06 = phi i32 [ 0, %entry ], [ %inc4, %for.body ]
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%redux5 = phi i32 [ 0, %entry ], [ %inc.redux, %for.body ]
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%add.i = add i64 %add.i7, -1
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%kind_.i = getelementptr inbounds i32, i32* %ptr, i64 %add.i
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%tmp.i1 = load i32, i32* %kind_.i, align 4
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%inc.redux = add i32 %tmp.i1, %redux5
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%inc4 = add i32 %i.06, 1
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%exitcond = icmp ne i32 %inc4, 1024
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br i1 %exitcond, label %for.body, label %loopend
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loopend:
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ret i32 %inc.redux
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}
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; CHECK-LABEL: @reverse_induction_i128(
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; CHECK: %index = phi i128 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %offset.idx = sub i128 %startval, %index
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; CHECK: %[[a0:.+]] = add i128 %offset.idx, 0
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; CHECK: %[[a1:.+]] = add i128 %offset.idx, -1
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; CHECK: %[[a2:.+]] = add i128 %offset.idx, -2
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; CHECK: %[[a3:.+]] = add i128 %offset.idx, -3
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; CHECK: %[[a4:.+]] = add i128 %offset.idx, -4
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; CHECK: %[[a5:.+]] = add i128 %offset.idx, -5
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; CHECK: %[[a6:.+]] = add i128 %offset.idx, -6
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; CHECK: %[[a7:.+]] = add i128 %offset.idx, -7
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define i32 @reverse_induction_i128(i128 %startval, i32 * %ptr) {
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entry:
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br label %for.body
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for.body:
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%add.i7 = phi i128 [ %startval, %entry ], [ %add.i, %for.body ]
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%i.06 = phi i32 [ 0, %entry ], [ %inc4, %for.body ]
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%redux5 = phi i32 [ 0, %entry ], [ %inc.redux, %for.body ]
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%add.i = add i128 %add.i7, -1
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%kind_.i = getelementptr inbounds i32, i32* %ptr, i128 %add.i
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%tmp.i1 = load i32, i32* %kind_.i, align 4
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%inc.redux = add i32 %tmp.i1, %redux5
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%inc4 = add i32 %i.06, 1
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%exitcond = icmp ne i32 %inc4, 1024
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br i1 %exitcond, label %for.body, label %loopend
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loopend:
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ret i32 %inc.redux
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}
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; CHECK-LABEL: @reverse_induction_i16(
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; CHECK: %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %offset.idx = sub i16 %startval, {{.*}}
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; CHECK: %[[a0:.+]] = add i16 %offset.idx, 0
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; CHECK: %[[a1:.+]] = add i16 %offset.idx, -1
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; CHECK: %[[a2:.+]] = add i16 %offset.idx, -2
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; CHECK: %[[a3:.+]] = add i16 %offset.idx, -3
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; CHECK: %[[a4:.+]] = add i16 %offset.idx, -4
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; CHECK: %[[a5:.+]] = add i16 %offset.idx, -5
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; CHECK: %[[a6:.+]] = add i16 %offset.idx, -6
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; CHECK: %[[a7:.+]] = add i16 %offset.idx, -7
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define i32 @reverse_induction_i16(i16 %startval, i32 * %ptr) {
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entry:
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br label %for.body
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for.body:
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%add.i7 = phi i16 [ %startval, %entry ], [ %add.i, %for.body ]
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%i.06 = phi i32 [ 0, %entry ], [ %inc4, %for.body ]
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%redux5 = phi i32 [ 0, %entry ], [ %inc.redux, %for.body ]
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%add.i = add i16 %add.i7, -1
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%kind_.i = getelementptr inbounds i32, i32* %ptr, i16 %add.i
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%tmp.i1 = load i32, i32* %kind_.i, align 4
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%inc.redux = add i32 %tmp.i1, %redux5
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%inc4 = add i32 %i.06, 1
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%exitcond = icmp ne i32 %inc4, 1024
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br i1 %exitcond, label %for.body, label %loopend
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loopend:
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ret i32 %inc.redux
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}
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@a = common global [1024 x i32] zeroinitializer, align 16
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; We incorrectly transformed this loop into an empty one because we left the
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; induction variable in i8 type and truncated the exit value 1024 to 0.
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; int a[1024];
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;
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; void fail() {
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; int reverse_induction = 1023;
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; unsigned char forward_induction = 0;
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; while ((reverse_induction) >= 0) {
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; forward_induction++;
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; a[reverse_induction] = forward_induction;
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; --reverse_induction;
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; }
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; }
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; CHECK-LABEL: @reverse_forward_induction_i64_i8(
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; CHECK: vector.body
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %vec.ind = phi <4 x i64> [ <i64 1023, i64 1022, i64 1021, i64 1020>, %vector.ph ]
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; CHECK: %step.add = add <4 x i64> %vec.ind, <i64 -4, i64 -4, i64 -4, i64 -4>
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; CHECK: trunc i64 %index to i8
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define void @reverse_forward_induction_i64_i8() {
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entry:
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br label %while.body
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while.body:
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%indvars.iv = phi i64 [ 1023, %entry ], [ %indvars.iv.next, %while.body ]
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%forward_induction.05 = phi i8 [ 0, %entry ], [ %inc, %while.body ]
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%inc = add i8 %forward_induction.05, 1
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%conv = zext i8 %inc to i32
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%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @a, i64 0, i64 %indvars.iv
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store i32 %conv, i32* %arrayidx, align 4
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%indvars.iv.next = add i64 %indvars.iv, -1
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%0 = trunc i64 %indvars.iv to i32
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%cmp = icmp sgt i32 %0, 0
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br i1 %cmp, label %while.body, label %while.end
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while.end:
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ret void
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}
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; CHECK-LABEL: @reverse_forward_induction_i64_i8_signed(
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; CHECK: vector.body:
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %vec.ind = phi <4 x i64> [ <i64 1023, i64 1022, i64 1021, i64 1020>, %vector.ph ]
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; CHECK: %step.add = add <4 x i64> %vec.ind, <i64 -4, i64 -4, i64 -4, i64 -4>
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define void @reverse_forward_induction_i64_i8_signed() {
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entry:
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br label %while.body
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while.body:
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%indvars.iv = phi i64 [ 1023, %entry ], [ %indvars.iv.next, %while.body ]
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%forward_induction.05 = phi i8 [ -127, %entry ], [ %inc, %while.body ]
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%inc = add i8 %forward_induction.05, 1
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%conv = sext i8 %inc to i32
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%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @a, i64 0, i64 %indvars.iv
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store i32 %conv, i32* %arrayidx, align 4
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%indvars.iv.next = add i64 %indvars.iv, -1
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%0 = trunc i64 %indvars.iv to i32
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%cmp = icmp sgt i32 %0, 0
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br i1 %cmp, label %while.body, label %while.end
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while.end:
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ret void
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}
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