summaryrefslogtreecommitdiffstats
path: root/llvm/test/Transforms/LoopVectorize/reduction.ll
diff options
context:
space:
mode:
authorEric Christopher <echristo@gmail.com>2019-04-17 02:12:23 +0000
committerEric Christopher <echristo@gmail.com>2019-04-17 02:12:23 +0000
commita86343512845c9c1fdbac865fea88aa5fce7142a (patch)
tree666fc6353de19ad8b00e56b67edd33f24104e4a7 /llvm/test/Transforms/LoopVectorize/reduction.ll
parent7f8ca6e3679b3af951cb7a4b1377edfaa3244b93 (diff)
downloadbcm5719-llvm-a86343512845c9c1fdbac865fea88aa5fce7142a.tar.gz
bcm5719-llvm-a86343512845c9c1fdbac865fea88aa5fce7142a.zip
Temporarily Revert "Add basic loop fusion pass."
As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
Diffstat (limited to 'llvm/test/Transforms/LoopVectorize/reduction.ll')
-rw-r--r--llvm/test/Transforms/LoopVectorize/reduction.ll580
1 files changed, 0 insertions, 580 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/reduction.ll b/llvm/test/Transforms/LoopVectorize/reduction.ll
deleted file mode 100644
index 1246cd5ca82..00000000000
--- a/llvm/test/Transforms/LoopVectorize/reduction.ll
+++ /dev/null
@@ -1,580 +0,0 @@
-; 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: @reduction_sum(
-;CHECK: phi <4 x i32>
-;CHECK: load <4 x i32>
-;CHECK: add <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_sum(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
- %1 = icmp sgt i32 %n, 0
- br i1 %1, label %.lr.ph, label %._crit_edge
-
-.lr.ph: ; preds = %0, %.lr.ph
- %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
- %sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %0 ]
- %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %3 = load i32, i32* %2, align 4
- %4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %5 = load i32, i32* %4, align 4
- %6 = trunc i64 %indvars.iv to i32
- %7 = add i32 %sum.02, %6
- %8 = add i32 %7, %3
- %9 = add i32 %8, %5
- %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
- %sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
- ret i32 %sum.0.lcssa
-}
-
-;CHECK-LABEL: @reduction_prod(
-;CHECK: phi <4 x i32>
-;CHECK: load <4 x i32>
-;CHECK: mul <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: mul <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: mul <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_prod(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
- %1 = icmp sgt i32 %n, 0
- br i1 %1, label %.lr.ph, label %._crit_edge
-
-.lr.ph: ; preds = %0, %.lr.ph
- %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
- %prod.02 = phi i32 [ %9, %.lr.ph ], [ 1, %0 ]
- %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %3 = load i32, i32* %2, align 4
- %4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %5 = load i32, i32* %4, align 4
- %6 = trunc i64 %indvars.iv to i32
- %7 = mul i32 %prod.02, %6
- %8 = mul i32 %7, %3
- %9 = mul i32 %8, %5
- %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
- %prod.0.lcssa = phi i32 [ 1, %0 ], [ %9, %.lr.ph ]
- ret i32 %prod.0.lcssa
-}
-
-;CHECK-LABEL: @reduction_mix(
-;CHECK: phi <4 x i32>
-;CHECK: load <4 x i32>
-;CHECK: mul nsw <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_mix(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
- %1 = icmp sgt i32 %n, 0
- br i1 %1, label %.lr.ph, label %._crit_edge
-
-.lr.ph: ; preds = %0, %.lr.ph
- %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
- %sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %0 ]
- %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %3 = load i32, i32* %2, align 4
- %4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %5 = load i32, i32* %4, align 4
- %6 = mul nsw i32 %5, %3
- %7 = trunc i64 %indvars.iv to i32
- %8 = add i32 %sum.02, %7
- %9 = add i32 %8, %6
- %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
- %sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
- ret i32 %sum.0.lcssa
-}
-
-;CHECK-LABEL: @reduction_mul(
-;CHECK: mul <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: mul <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: mul <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_mul(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
- %1 = icmp sgt i32 %n, 0
- br i1 %1, label %.lr.ph, label %._crit_edge
-
-.lr.ph: ; preds = %0, %.lr.ph
- %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
- %sum.02 = phi i32 [ %9, %.lr.ph ], [ 19, %0 ]
- %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %3 = load i32, i32* %2, align 4
- %4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %5 = load i32, i32* %4, align 4
- %6 = trunc i64 %indvars.iv to i32
- %7 = add i32 %3, %6
- %8 = add i32 %7, %5
- %9 = mul i32 %8, %sum.02
- %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
- %sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
- ret i32 %sum.0.lcssa
-}
-
-;CHECK-LABEL: @start_at_non_zero(
-;CHECK: phi <4 x i32>
-;CHECK: <i32 120, i32 0, i32 0, i32 0>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @start_at_non_zero(i32* nocapture %in, i32* nocapture %coeff, i32* nocapture %out, i32 %n) nounwind uwtable readonly ssp {
-entry:
- %cmp7 = icmp sgt i32 %n, 0
- br i1 %cmp7, label %for.body, label %for.end
-
-for.body: ; preds = %entry, %for.body
- %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
- %sum.09 = phi i32 [ %add, %for.body ], [ 120, %entry ]
- %arrayidx = getelementptr inbounds i32, i32* %in, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4
- %arrayidx2 = getelementptr inbounds i32, i32* %coeff, i64 %indvars.iv
- %1 = load i32, i32* %arrayidx2, align 4
- %mul = mul nsw i32 %1, %0
- %add = add nsw i32 %mul, %sum.09
- %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 %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- %sum.0.lcssa = phi i32 [ 120, %entry ], [ %add, %for.body ]
- ret i32 %sum.0.lcssa
-}
-
-;CHECK-LABEL: @reduction_and(
-;CHECK: <i32 -1, i32 -1, i32 -1, i32 -1>
-;CHECK: and <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: and <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: and <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_and(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
-entry:
- %cmp7 = icmp sgt i32 %n, 0
- br i1 %cmp7, label %for.body, label %for.end
-
-for.body: ; preds = %entry, %for.body
- %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
- %result.08 = phi i32 [ %and, %for.body ], [ -1, %entry ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4
- %arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %1 = load i32, i32* %arrayidx2, align 4
- %add = add nsw i32 %1, %0
- %and = and i32 %add, %result.08
- %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 %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- %result.0.lcssa = phi i32 [ -1, %entry ], [ %and, %for.body ]
- ret i32 %result.0.lcssa
-}
-
-;CHECK-LABEL: @reduction_or(
-;CHECK: or <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: or <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: or <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_or(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
-entry:
- %cmp7 = icmp sgt i32 %n, 0
- br i1 %cmp7, label %for.body, label %for.end
-
-for.body: ; preds = %entry, %for.body
- %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
- %result.08 = phi i32 [ %or, %for.body ], [ 0, %entry ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4
- %arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %1 = load i32, i32* %arrayidx2, align 4
- %add = add nsw i32 %1, %0
- %or = or i32 %add, %result.08
- %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 %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- %result.0.lcssa = phi i32 [ 0, %entry ], [ %or, %for.body ]
- ret i32 %result.0.lcssa
-}
-
-;CHECK-LABEL: @reduction_xor(
-;CHECK: xor <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: xor <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: xor <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: ret i32
-define i32 @reduction_xor(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
-entry:
- %cmp7 = icmp sgt i32 %n, 0
- br i1 %cmp7, label %for.body, label %for.end
-
-for.body: ; preds = %entry, %for.body
- %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
- %result.08 = phi i32 [ %xor, %for.body ], [ 0, %entry ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4
- %arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %1 = load i32, i32* %arrayidx2, align 4
- %add = add nsw i32 %1, %0
- %xor = xor i32 %add, %result.08
- %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 %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- %result.0.lcssa = phi i32 [ 0, %entry ], [ %xor, %for.body ]
- ret i32 %result.0.lcssa
-}
-
-; In this code the subtracted variable is on the RHS and this is not an induction variable.
-;CHECK-LABEL: @reduction_sub_rhs(
-;CHECK-NOT: phi <4 x i32>
-;CHECK-NOT: sub nsw <4 x i32>
-;CHECK: ret i32
-define i32 @reduction_sub_rhs(i32 %n, i32* noalias nocapture %A) nounwind uwtable readonly {
-entry:
- %cmp4 = icmp sgt i32 %n, 0
- br i1 %cmp4, label %for.body, label %for.end
-
-for.body: ; preds = %entry, %for.body
- %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
- %x.05 = phi i32 [ %sub, %for.body ], [ 0, %entry ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4
- %sub = sub nsw i32 %0, %x.05
- %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 %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- %x.0.lcssa = phi i32 [ 0, %entry ], [ %sub, %for.body ]
- ret i32 %x.0.lcssa
-}
-
-
-; In this test the reduction variable is on the LHS and we can vectorize it.
-;CHECK-LABEL: @reduction_sub_lhs(
-;CHECK: phi <4 x i32>
-;CHECK: sub nsw <4 x i32>
-;CHECK: ret i32
-define i32 @reduction_sub_lhs(i32 %n, i32* noalias nocapture %A) nounwind uwtable readonly {
-entry:
- %cmp4 = icmp sgt i32 %n, 0
- br i1 %cmp4, label %for.body, label %for.end
-
-for.body: ; preds = %entry, %for.body
- %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
- %x.05 = phi i32 [ %sub, %for.body ], [ 0, %entry ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4
- %sub = sub nsw i32 %x.05, %0
- %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 %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- %x.0.lcssa = phi i32 [ 0, %entry ], [ %sub, %for.body ]
- ret i32 %x.0.lcssa
-}
-
-; We can vectorize conditional reductions with multi-input phis.
-; CHECK: reduction_conditional
-; CHECK: fadd fast <4 x float>
-
-define float @reduction_conditional(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, float* %A, i64 %indvars.iv
- %0 = load float, float* %arrayidx, align 4
- %arrayidx2 = getelementptr inbounds float, float* %B, i64 %indvars.iv
- %1 = load float, 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, float* %A, i64 %indvars.iv
- %0 = load float, float* %arrayidx, align 4
- %arrayidx2 = getelementptr inbounds float, float* %B, i64 %indvars.iv
- %1 = load float, 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, float* %B, i64 %indvars.iv
- %0 = load float, 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
-}
-
-;CHECK-LABEL: @reduction_sum_multiuse(
-;CHECK: phi <4 x i32>
-;CHECK: load <4 x i32>
-;CHECK: add <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: shufflevector <4 x i32> %{{.*}}, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
-;CHECK: add <4 x i32>
-;CHECK: extractelement <4 x i32> %{{.*}}, i32 0
-;CHECK: %sum.lcssa = phi i32 [ %[[SCALAR:.*]], %.lr.ph ], [ %[[VECTOR:.*]], %middle.block ]
-;CHECK: %sum.copy = phi i32 [ %[[SCALAR]], %.lr.ph ], [ %[[VECTOR]], %middle.block ]
-;CHECK: ret i32
-define i32 @reduction_sum_multiuse(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) {
- %1 = icmp sgt i32 %n, 0
- br i1 %1, label %.lr.ph.preheader, label %end
-.lr.ph.preheader: ; preds = %0
- br label %.lr.ph
-
-.lr.ph: ; preds = %0, %.lr.ph
- %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph.preheader ]
- %sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %.lr.ph.preheader ]
- %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %3 = load i32, i32* %2, align 4
- %4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
- %5 = load i32, i32* %4, align 4
- %6 = trunc i64 %indvars.iv to i32
- %7 = add i32 %sum.02, %6
- %8 = add i32 %7, %3
- %9 = add i32 %8, %5
- %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
- %sum.lcssa = phi i32 [ %9, %.lr.ph ]
- %sum.copy = phi i32 [ %9, %.lr.ph ]
- br label %end
-
-end:
- %f1 = phi i32 [ 0, %0 ], [ %sum.lcssa, %._crit_edge ]
- %f2 = phi i32 [ 0, %0 ], [ %sum.copy, %._crit_edge ]
- %final = add i32 %f1, %f2
- ret i32 %final
-}
-
-; This looks like a predicated reduction, but it is a reset of the reduction
-; variable. We cannot vectorize this.
-; CHECK-LABEL: reduction_reset(
-; CHECK-NOT: <4 x i32>
-define void @reduction_reset(i32 %N, i32* nocapture readonly %arrayA, i32* nocapture %arrayB) {
-entry:
- %c4 = icmp sgt i32 %N, 0
- br i1 %c4, label %.lr.ph.preheader, label %._crit_edge
-
-.lr.ph.preheader: ; preds = %entry
- %c5 = add i32 %N, -1
- %wide.trip.count = zext i32 %N to i64
- br label %.lr.ph
-
-.lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader
- %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
- %.017 = phi i32 [ 100, %.lr.ph.preheader ], [ %csel, %.lr.ph ]
- %c6 = getelementptr inbounds i32, i32* %arrayA, i64 %indvars.iv
- %c7 = load i32, i32* %c6, align 4
- %c8 = icmp sgt i32 %c7, 0
- %c9 = add nsw i32 %c7, %.017
- %csel = select i1 %c8, i32 %c9, i32 0
- %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
- %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
- br i1 %exitcond, label %._crit_edge.loopexit, label %.lr.ph
-
-._crit_edge.loopexit: ; preds = %.lr.ph
- %csel.lcssa = phi i32 [ %csel, %.lr.ph ]
- %phitmp19 = sext i32 %c5 to i64
- br label %._crit_edge
-
-._crit_edge: ; preds = %._crit_edge.loopexit, %entry
- %.015.lcssa = phi i64 [ -1, %entry ], [ %phitmp19, %._crit_edge.loopexit ]
- %.0.lcssa = phi i32 [ 100, %entry ], [ %csel.lcssa, %._crit_edge.loopexit ]
- %c10 = getelementptr inbounds i32, i32* %arrayB, i64 %.015.lcssa
- store i32 %.0.lcssa, i32* %c10, align 4
- ret void
-}
OpenPOWER on IntegriCloud