79 lines
2.7 KiB
LLVM
79 lines
2.7 KiB
LLVM
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; 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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;CHECK-LABEL: @flags1(
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;CHECK: load <4 x i32>
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;CHECK: mul nsw <4 x i32>
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;CHECK: store <4 x i32>
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;CHECK: ret i32
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define i32 @flags1(i32 %n, i32* nocapture %A) nounwind uwtable ssp {
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%1 = icmp sgt i32 %n, 9
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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 ], [ 9, %0 ]
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%2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%3 = load i32, i32* %2, align 4
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%4 = mul nsw i32 %3, 3
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store i32 %4, i32* %2, align 4
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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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ret i32 undef
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}
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;CHECK-LABEL: @flags2(
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;CHECK: load <4 x i32>
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;CHECK: mul <4 x i32>
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;CHECK: store <4 x i32>
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;CHECK: ret i32
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define i32 @flags2(i32 %n, i32* nocapture %A) nounwind uwtable ssp {
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%1 = icmp sgt i32 %n, 9
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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 ], [ 9, %0 ]
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%2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%3 = load i32, i32* %2, align 4
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%4 = mul i32 %3, 3
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store i32 %4, i32* %2, align 4
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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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ret i32 undef
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}
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; Make sure we copy fast math flags and use them for the final reduction.
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; CHECK-LABEL: fast_math
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; CHECK: load <4 x float>
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; CHECK: fadd fast <4 x float>
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; CHECK: br
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; CHECK: fadd fast <4 x float>
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; CHECK: fadd fast <4 x float>
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define float @fast_math(float* noalias %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.body ]
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%q.04 = phi float [ 0.000000e+00, %entry ], [ %add, %for.body ]
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%arrayidx = getelementptr inbounds float, float* %s, i64 %indvars.iv
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%0 = load float, float* %arrayidx, align 4
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%add = fadd fast float %q.04, %0
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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, 256
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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%add.lcssa = phi float [ %add, %for.body ]
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ret float %add.lcssa
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}
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