1 ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s 2 3 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" 4 target triple = "x86_64-apple-macosx10.8.0" 5 6 ;CHECK-LABEL: @flags1( 7 ;CHECK: load <4 x i32> 8 ;CHECK: mul nsw <4 x i32> 9 ;CHECK: store <4 x i32> 10 ;CHECK: ret i32 11 define i32 @flags1(i32 %n, i32* nocapture %A) nounwind uwtable ssp { 12 %1 = icmp sgt i32 %n, 9 13 br i1 %1, label %.lr.ph, label %._crit_edge 14 15 .lr.ph: ; preds = %0, %.lr.ph 16 %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 9, %0 ] 17 %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv 18 %3 = load i32, i32* %2, align 4 19 %4 = mul nsw i32 %3, 3 20 store i32 %4, i32* %2, align 4 21 %indvars.iv.next = add i64 %indvars.iv, 1 22 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 23 %exitcond = icmp eq i32 %lftr.wideiv, %n 24 br i1 %exitcond, label %._crit_edge, label %.lr.ph 25 26 ._crit_edge: ; preds = %.lr.ph, %0 27 ret i32 undef 28 } 29 30 31 ;CHECK-LABEL: @flags2( 32 ;CHECK: load <4 x i32> 33 ;CHECK: mul <4 x i32> 34 ;CHECK: store <4 x i32> 35 ;CHECK: ret i32 36 define i32 @flags2(i32 %n, i32* nocapture %A) nounwind uwtable ssp { 37 %1 = icmp sgt i32 %n, 9 38 br i1 %1, label %.lr.ph, label %._crit_edge 39 40 .lr.ph: ; preds = %0, %.lr.ph 41 %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 9, %0 ] 42 %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv 43 %3 = load i32, i32* %2, align 4 44 %4 = mul i32 %3, 3 45 store i32 %4, i32* %2, align 4 46 %indvars.iv.next = add i64 %indvars.iv, 1 47 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 48 %exitcond = icmp eq i32 %lftr.wideiv, %n 49 br i1 %exitcond, label %._crit_edge, label %.lr.ph 50 51 ._crit_edge: ; preds = %.lr.ph, %0 52 ret i32 undef 53 } 54 55 ; Make sure we copy fast math flags and use them for the final reduction. 56 ; CHECK-LABEL: fast_math 57 ; CHECK: load <4 x float> 58 ; CHECK: fadd fast <4 x float> 59 ; CHECK: br 60 ; CHECK: fadd fast <4 x float> 61 ; CHECK: fadd fast <4 x float> 62 define float @fast_math(float* noalias %s) { 63 entry: 64 br label %for.body 65 66 for.body: 67 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 68 %q.04 = phi float [ 0.000000e+00, %entry ], [ %add, %for.body ] 69 %arrayidx = getelementptr inbounds float, float* %s, i64 %indvars.iv 70 %0 = load float, float* %arrayidx, align 4 71 %add = fadd fast float %q.04, %0 72 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 73 %exitcond = icmp eq i64 %indvars.iv.next, 256 74 br i1 %exitcond, label %for.end, label %for.body 75 76 for.end: 77 %add.lcssa = phi float [ %add, %for.body ] 78 ret float %add.lcssa 79 } 80
