forked from OSchip/llvm-project
497 lines
18 KiB
LLVM
497 lines
18 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -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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target triple = "x86_64-apple-macosx10.8.0"
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;CHECK-LABEL: @reduction_sum(
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;CHECK: phi <4 x i32>
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;CHECK: load <4 x i32>
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;CHECK: add <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: add <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: add <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_sum(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
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%1 = icmp sgt i32 %n, 0
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br i1 %1, label %.lr.ph, label %._crit_edge
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.lr.ph: ; preds = %0, %.lr.ph
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%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
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%sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %0 ]
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%2 = getelementptr inbounds i32* %A, i64 %indvars.iv
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%3 = load i32* %2, align 4
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%4 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%5 = load i32* %4, align 4
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%6 = trunc i64 %indvars.iv to i32
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%7 = add i32 %sum.02, %6
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%8 = add i32 %7, %3
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%9 = add i32 %8, %5
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %._crit_edge, label %.lr.ph
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._crit_edge: ; preds = %.lr.ph, %0
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%sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
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ret i32 %sum.0.lcssa
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}
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;CHECK-LABEL: @reduction_prod(
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;CHECK: phi <4 x i32>
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;CHECK: load <4 x i32>
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;CHECK: mul <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: mul <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: mul <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_prod(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
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%1 = icmp sgt i32 %n, 0
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br i1 %1, label %.lr.ph, label %._crit_edge
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.lr.ph: ; preds = %0, %.lr.ph
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%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
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%prod.02 = phi i32 [ %9, %.lr.ph ], [ 1, %0 ]
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%2 = getelementptr inbounds i32* %A, i64 %indvars.iv
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%3 = load i32* %2, align 4
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%4 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%5 = load i32* %4, align 4
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%6 = trunc i64 %indvars.iv to i32
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%7 = mul i32 %prod.02, %6
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%8 = mul i32 %7, %3
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%9 = mul i32 %8, %5
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %._crit_edge, label %.lr.ph
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._crit_edge: ; preds = %.lr.ph, %0
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%prod.0.lcssa = phi i32 [ 1, %0 ], [ %9, %.lr.ph ]
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ret i32 %prod.0.lcssa
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}
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;CHECK-LABEL: @reduction_mix(
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;CHECK: phi <4 x i32>
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;CHECK: load <4 x i32>
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;CHECK: mul nsw <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: add <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: add <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_mix(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
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%1 = icmp sgt i32 %n, 0
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br i1 %1, label %.lr.ph, label %._crit_edge
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.lr.ph: ; preds = %0, %.lr.ph
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%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
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%sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %0 ]
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%2 = getelementptr inbounds i32* %A, i64 %indvars.iv
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%3 = load i32* %2, align 4
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%4 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%5 = load i32* %4, align 4
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%6 = mul nsw i32 %5, %3
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%7 = trunc i64 %indvars.iv to i32
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%8 = add i32 %sum.02, %7
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%9 = add i32 %8, %6
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %._crit_edge, label %.lr.ph
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._crit_edge: ; preds = %.lr.ph, %0
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%sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
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ret i32 %sum.0.lcssa
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}
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;CHECK-LABEL: @reduction_mul(
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;CHECK: mul <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: mul <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: mul <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_mul(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
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%1 = icmp sgt i32 %n, 0
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br i1 %1, label %.lr.ph, label %._crit_edge
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.lr.ph: ; preds = %0, %.lr.ph
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%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
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%sum.02 = phi i32 [ %9, %.lr.ph ], [ 19, %0 ]
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%2 = getelementptr inbounds i32* %A, i64 %indvars.iv
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%3 = load i32* %2, align 4
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%4 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%5 = load i32* %4, align 4
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%6 = trunc i64 %indvars.iv to i32
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%7 = add i32 %3, %6
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%8 = add i32 %7, %5
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%9 = mul i32 %8, %sum.02
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %._crit_edge, label %.lr.ph
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._crit_edge: ; preds = %.lr.ph, %0
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%sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
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ret i32 %sum.0.lcssa
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}
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;CHECK-LABEL: @start_at_non_zero(
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;CHECK: phi <4 x i32>
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;CHECK: <i32 120, i32 0, i32 0, i32 0>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: add <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: add <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @start_at_non_zero(i32* nocapture %in, i32* nocapture %coeff, i32* nocapture %out, i32 %n) nounwind uwtable readonly ssp {
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entry:
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%cmp7 = icmp sgt i32 %n, 0
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br i1 %cmp7, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%sum.09 = phi i32 [ %add, %for.body ], [ 120, %entry ]
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%arrayidx = getelementptr inbounds i32* %in, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32* %coeff, i64 %indvars.iv
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%1 = load i32* %arrayidx2, align 4
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%mul = mul nsw i32 %1, %0
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%add = add nsw i32 %mul, %sum.09
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%sum.0.lcssa = phi i32 [ 120, %entry ], [ %add, %for.body ]
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ret i32 %sum.0.lcssa
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}
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;CHECK-LABEL: @reduction_and(
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;CHECK: and <4 x i32>
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;CHECK: <i32 -1, i32 -1, i32 -1, i32 -1>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: and <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: and <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_and(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
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entry:
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%cmp7 = icmp sgt i32 %n, 0
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br i1 %cmp7, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%result.08 = phi i32 [ %and, %for.body ], [ -1, %entry ]
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%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%1 = load i32* %arrayidx2, align 4
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%add = add nsw i32 %1, %0
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%and = and i32 %add, %result.08
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%result.0.lcssa = phi i32 [ -1, %entry ], [ %and, %for.body ]
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ret i32 %result.0.lcssa
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}
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;CHECK-LABEL: @reduction_or(
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;CHECK: or <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: or <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: or <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_or(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
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entry:
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%cmp7 = icmp sgt i32 %n, 0
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br i1 %cmp7, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%result.08 = phi i32 [ %or, %for.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%1 = load i32* %arrayidx2, align 4
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%add = add nsw i32 %1, %0
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%or = or i32 %add, %result.08
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%result.0.lcssa = phi i32 [ 0, %entry ], [ %or, %for.body ]
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ret i32 %result.0.lcssa
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}
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;CHECK-LABEL: @reduction_xor(
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;CHECK: xor <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
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;CHECK: xor <4 x i32>
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;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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;CHECK: xor <4 x i32>
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;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
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;CHECK: ret i32
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define i32 @reduction_xor(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
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entry:
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%cmp7 = icmp sgt i32 %n, 0
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br i1 %cmp7, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%result.08 = phi i32 [ %xor, %for.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32* %B, i64 %indvars.iv
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%1 = load i32* %arrayidx2, align 4
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%add = add nsw i32 %1, %0
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%xor = xor i32 %add, %result.08
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%result.0.lcssa = phi i32 [ 0, %entry ], [ %xor, %for.body ]
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ret i32 %result.0.lcssa
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}
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; In this code the subtracted variable is on the RHS and this is not an induction variable.
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;CHECK-LABEL: @reduction_sub_rhs(
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;CHECK-NOT: phi <4 x i32>
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;CHECK-NOT: sub nsw <4 x i32>
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;CHECK: ret i32
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define i32 @reduction_sub_rhs(i32 %n, i32* noalias nocapture %A) nounwind uwtable readonly {
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entry:
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%cmp4 = icmp sgt i32 %n, 0
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br i1 %cmp4, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%x.05 = phi i32 [ %sub, %for.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%sub = sub nsw i32 %0, %x.05
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%x.0.lcssa = phi i32 [ 0, %entry ], [ %sub, %for.body ]
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ret i32 %x.0.lcssa
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}
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; In this test the reduction variable is on the LHS and we can vectorize it.
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;CHECK-LABEL: @reduction_sub_lhs(
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;CHECK: phi <4 x i32>
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;CHECK: sub nsw <4 x i32>
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;CHECK: ret i32
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define i32 @reduction_sub_lhs(i32 %n, i32* noalias nocapture %A) nounwind uwtable readonly {
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entry:
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%cmp4 = icmp sgt i32 %n, 0
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br i1 %cmp4, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
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%x.05 = phi i32 [ %sub, %for.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32* %A, i64 %indvars.iv
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%0 = load i32* %arrayidx, align 4
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%sub = sub nsw i32 %x.05, %0
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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%x.0.lcssa = phi i32 [ 0, %entry ], [ %sub, %for.body ]
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ret i32 %x.0.lcssa
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}
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; We can vectorize conditional reductions with multi-input phis.
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; CHECK: reduction_conditional
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; CHECK: fadd <4 x float>
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define float @reduction_conditional(float* %A, float* %B, float* %C, float %S) {
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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.inc ]
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%sum.033 = phi float [ %S, %entry ], [ %sum.1, %for.inc ]
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%arrayidx = getelementptr inbounds float* %A, i64 %indvars.iv
|
|
%0 = load float* %arrayidx, align 4
|
|
%arrayidx2 = getelementptr inbounds float* %B, i64 %indvars.iv
|
|
%1 = load float* %arrayidx2, align 4
|
|
%cmp3 = fcmp ogt float %0, %1
|
|
br i1 %cmp3, label %if.then, label %for.inc
|
|
|
|
if.then:
|
|
%cmp6 = fcmp ogt float %1, 1.000000e+00
|
|
br i1 %cmp6, label %if.then8, label %if.else
|
|
|
|
if.then8:
|
|
%add = fadd fast float %sum.033, %0
|
|
br label %for.inc
|
|
|
|
if.else:
|
|
%cmp14 = fcmp ogt float %0, 2.000000e+00
|
|
br i1 %cmp14, label %if.then16, label %for.inc
|
|
|
|
if.then16:
|
|
%add19 = fadd fast float %sum.033, %1
|
|
br label %for.inc
|
|
|
|
for.inc:
|
|
%sum.1 = phi float [ %add, %if.then8 ], [ %add19, %if.then16 ], [ %sum.033, %if.else ], [ %sum.033, %for.body ]
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp ne i32 %lftr.wideiv, 128
|
|
br i1 %exitcond, label %for.body, label %for.end
|
|
|
|
for.end:
|
|
%sum.1.lcssa = phi float [ %sum.1, %for.inc ]
|
|
ret float %sum.1.lcssa
|
|
}
|
|
|
|
; We can't vectorize reductions with phi inputs from outside the reduction.
|
|
; CHECK: noreduction_phi
|
|
; CHECK-NOT: fadd <4 x float>
|
|
define float @noreduction_phi(float* %A, float* %B, float* %C, float %S) {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
|
|
%sum.033 = phi float [ %S, %entry ], [ %sum.1, %for.inc ]
|
|
%arrayidx = getelementptr inbounds float* %A, i64 %indvars.iv
|
|
%0 = load float* %arrayidx, align 4
|
|
%arrayidx2 = getelementptr inbounds float* %B, i64 %indvars.iv
|
|
%1 = load float* %arrayidx2, align 4
|
|
%cmp3 = fcmp ogt float %0, %1
|
|
br i1 %cmp3, label %if.then, label %for.inc
|
|
|
|
if.then:
|
|
%cmp6 = fcmp ogt float %1, 1.000000e+00
|
|
br i1 %cmp6, label %if.then8, label %if.else
|
|
|
|
if.then8:
|
|
%add = fadd fast float %sum.033, %0
|
|
br label %for.inc
|
|
|
|
if.else:
|
|
%cmp14 = fcmp ogt float %0, 2.000000e+00
|
|
br i1 %cmp14, label %if.then16, label %for.inc
|
|
|
|
if.then16:
|
|
%add19 = fadd fast float %sum.033, %1
|
|
br label %for.inc
|
|
|
|
for.inc:
|
|
%sum.1 = phi float [ %add, %if.then8 ], [ %add19, %if.then16 ], [ 0.000000e+00, %if.else ], [ %sum.033, %for.body ]
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp ne i32 %lftr.wideiv, 128
|
|
br i1 %exitcond, label %for.body, label %for.end
|
|
|
|
for.end:
|
|
%sum.1.lcssa = phi float [ %sum.1, %for.inc ]
|
|
ret float %sum.1.lcssa
|
|
}
|
|
|
|
; We can't vectorize reductions that feed another header PHI.
|
|
; CHECK: noredux_header_phi
|
|
; CHECK-NOT: fadd <4 x float>
|
|
|
|
define float @noredux_header_phi(float* %A, float* %B, float* %C, float %S) {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
|
|
%sum2.09 = phi float [ 0.000000e+00, %entry ], [ %add1, %for.body ]
|
|
%sum.08 = phi float [ %S, %entry ], [ %add, %for.body ]
|
|
%arrayidx = getelementptr inbounds float* %B, i64 %indvars.iv
|
|
%0 = load float* %arrayidx, align 4
|
|
%add = fadd fast float %sum.08, %0
|
|
%add1 = fadd fast float %sum2.09, %add
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp ne i32 %lftr.wideiv, 128
|
|
br i1 %exitcond, label %for.body, label %for.end
|
|
|
|
for.end:
|
|
%add1.lcssa = phi float [ %add1, %for.body ]
|
|
%add.lcssa = phi float [ %add, %for.body ]
|
|
%add2 = fadd fast float %add.lcssa, %add1.lcssa
|
|
ret float %add2
|
|
}
|
|
|
|
|
|
; When vectorizing a reduction whose loop header phi value is used outside the
|
|
; loop special care must be taken. Otherwise, the reduced value feeding into the
|
|
; outside user misses a few iterations (VF-1) of the loop.
|
|
; PR16522
|
|
|
|
; CHECK-LABEL: @phivalueredux(
|
|
; CHECK-NOT: x i32>
|
|
|
|
define i32 @phivalueredux(i32 %p) {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%t.03 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%p.addr.02 = phi i32 [ %p, %entry ], [ %xor, %for.body ]
|
|
%xor = xor i32 %p.addr.02, -1
|
|
%inc = add nsw i32 %t.03, 1
|
|
%exitcond = icmp eq i32 %inc, 16
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end:
|
|
ret i32 %p.addr.02
|
|
}
|
|
|
|
; Don't vectorize a reduction value that is not the last in a reduction cyle. We
|
|
; would loose iterations (VF-1) on the operations after that use.
|
|
; PR17498
|
|
|
|
; CHECK-LABEL: not_last_operation
|
|
; CHECK-NOT: x i32>
|
|
define i32 @not_last_operation(i32 %p, i32 %val) {
|
|
entry:
|
|
%tobool = icmp eq i32 %p, 0
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%inc613.1 = phi i32 [ 0, %entry ], [ %inc6.1, %for.body ]
|
|
%inc511.1 = phi i32 [ %val, %entry ], [ %inc5.1, %for.body ]
|
|
%0 = zext i1 %tobool to i32
|
|
%inc4.1 = xor i32 %0, 1
|
|
%inc511.1.inc4.1 = add nsw i32 %inc511.1, %inc4.1
|
|
%inc5.1 = add nsw i32 %inc511.1.inc4.1, 1
|
|
%inc6.1 = add nsw i32 %inc613.1, 1
|
|
%exitcond.1 = icmp eq i32 %inc6.1, 22
|
|
br i1 %exitcond.1, label %exit, label %for.body
|
|
|
|
exit:
|
|
%inc.2 = add nsw i32 %inc511.1.inc4.1, 2
|
|
ret i32 %inc.2
|
|
}
|