78 lines
2.7 KiB
LLVM
78 lines
2.7 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
|
|
|
|
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"
|
|
|
|
;CHECK-LABEL: @flags1(
|
|
;CHECK: load <4 x i32>
|
|
;CHECK: mul nsw <4 x i32>
|
|
;CHECK: store <4 x i32>
|
|
;CHECK: ret i32
|
|
define i32 @flags1(i32 %n, i32* nocapture %A) nounwind uwtable ssp {
|
|
%1 = icmp sgt i32 %n, 9
|
|
br i1 %1, label %.lr.ph, label %._crit_edge
|
|
|
|
.lr.ph: ; preds = %0, %.lr.ph
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 9, %0 ]
|
|
%2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%3 = load i32, i32* %2, align 4
|
|
%4 = mul nsw i32 %3, 3
|
|
store i32 %4, i32* %2, align 4
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %n
|
|
br i1 %exitcond, label %._crit_edge, label %.lr.ph
|
|
|
|
._crit_edge: ; preds = %.lr.ph, %0
|
|
ret i32 undef
|
|
}
|
|
|
|
|
|
;CHECK-LABEL: @flags2(
|
|
;CHECK: load <4 x i32>
|
|
;CHECK: mul <4 x i32>
|
|
;CHECK: store <4 x i32>
|
|
;CHECK: ret i32
|
|
define i32 @flags2(i32 %n, i32* nocapture %A) nounwind uwtable ssp {
|
|
%1 = icmp sgt i32 %n, 9
|
|
br i1 %1, label %.lr.ph, label %._crit_edge
|
|
|
|
.lr.ph: ; preds = %0, %.lr.ph
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 9, %0 ]
|
|
%2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%3 = load i32, i32* %2, align 4
|
|
%4 = mul i32 %3, 3
|
|
store i32 %4, i32* %2, align 4
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %n
|
|
br i1 %exitcond, label %._crit_edge, label %.lr.ph
|
|
|
|
._crit_edge: ; preds = %.lr.ph, %0
|
|
ret i32 undef
|
|
}
|
|
|
|
; Make sure we copy fast math flags and use them for the final reduction.
|
|
; CHECK-LABEL: fast_math
|
|
; CHECK: load <4 x float>
|
|
; CHECK: fadd fast <4 x float>
|
|
; CHECK: br
|
|
; CHECK: call fast float @llvm.vector.reduce.fadd.v4f32
|
|
define float @fast_math(float* noalias %s) {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
|
|
%q.04 = phi float [ 0.000000e+00, %entry ], [ %add, %for.body ]
|
|
%arrayidx = getelementptr inbounds float, float* %s, i64 %indvars.iv
|
|
%0 = load float, float* %arrayidx, align 4
|
|
%add = fadd fast float %q.04, %0
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%exitcond = icmp eq i64 %indvars.iv.next, 256
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end:
|
|
%add.lcssa = phi float [ %add, %for.body ]
|
|
ret float %add.lcssa
|
|
}
|