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author | Stephen Hines <srhines@google.com> | 2014-04-23 16:57:46 -0700 |
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committer | Stephen Hines <srhines@google.com> | 2014-04-24 15:53:16 -0700 |
commit | 36b56886974eae4f9c5ebc96befd3e7bfe5de338 (patch) | |
tree | e6cfb69fbbd937f450eeb83bfb83b9da3b01275a /test/Transforms/LoopStrengthReduce/X86/no_superflous_induction_vars.ll | |
parent | 69a8640022b04415ae9fac62f8ab090601d8f889 (diff) | |
download | external_llvm-36b56886974eae4f9c5ebc96befd3e7bfe5de338.zip external_llvm-36b56886974eae4f9c5ebc96befd3e7bfe5de338.tar.gz external_llvm-36b56886974eae4f9c5ebc96befd3e7bfe5de338.tar.bz2 |
Update to LLVM 3.5a.
Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617
Diffstat (limited to 'test/Transforms/LoopStrengthReduce/X86/no_superflous_induction_vars.ll')
-rw-r--r-- | test/Transforms/LoopStrengthReduce/X86/no_superflous_induction_vars.ll | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/X86/no_superflous_induction_vars.ll b/test/Transforms/LoopStrengthReduce/X86/no_superflous_induction_vars.ll new file mode 100644 index 0000000..5506994 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/X86/no_superflous_induction_vars.ll @@ -0,0 +1,50 @@ +; RUN: opt -S -loop-reduce -mcpu=corei7-avx -mtriple=x86_64-apple-macosx < %s | FileCheck %s + +target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" + +define void @indvar_expansion(i8* nocapture readonly %rowsptr) { +entry: + br label %for.cond + +; SCEVExpander used to create induction variables in the loop %for.cond while +; expanding the recurrence start value of loop strength reduced values from +; %vector.body. + +; CHECK-LABEL: indvar_expansion +; CHECK: for.cond: +; CHECK-NOT: phi i3 +; CHECK: br i1 {{.+}}, label %for.cond + +for.cond: + %indvars.iv44 = phi i64 [ %indvars.iv.next45, %for.cond ], [ 0, %entry ] + %cmp = icmp eq i8 undef, 0 + %indvars.iv.next45 = add nuw nsw i64 %indvars.iv44, 1 + br i1 %cmp, label %for.cond, label %for.cond2 + +for.cond2: + br i1 undef, label %for.cond2, label %for.body14.lr.ph + +for.body14.lr.ph: + %sext = shl i64 %indvars.iv44, 32 + %0 = ashr exact i64 %sext, 32 + %1 = sub i64 undef, %indvars.iv44 + %2 = and i64 %1, 4294967295 + %3 = add i64 %2, 1 + %fold = add i64 %1, 1 + %n.mod.vf = and i64 %fold, 7 + %n.vec = sub i64 %3, %n.mod.vf + %end.idx.rnd.down = add i64 %n.vec, %0 + br label %vector.body + +vector.body: + %index = phi i64 [ %index.next, %vector.body ], [ %0, %for.body14.lr.ph ] + %4 = getelementptr inbounds i8* %rowsptr, i64 %index + %5 = bitcast i8* %4 to <4 x i8>* + %wide.load = load <4 x i8>* %5, align 1 + %index.next = add i64 %index, 8 + %6 = icmp eq i64 %index.next, %end.idx.rnd.down + br i1 %6, label %for.end24, label %vector.body + +for.end24: + ret void +} |