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authorRenato Golin <renato.golin@linaro.org>2013-10-24 15:11:03 +0000
committerRenato Golin <renato.golin@linaro.org>2013-10-24 15:11:03 +0000
commit93fd763184aba63da67bc6554379d202671d7b52 (patch)
tree3d6f554271736319142d882e84187c69984d757a /test/Transforms
parent96b40055489a044a1815d5316f8b865794dd7550 (diff)
downloadexternal_llvm-93fd763184aba63da67bc6554379d202671d7b52.zip
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Fix broken builds by moving test to x86 dir
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193351 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
-rw-r--r--test/Transforms/LoopVectorize/X86/already-vectorized.ll46
1 files changed, 46 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/X86/already-vectorized.ll b/test/Transforms/LoopVectorize/X86/already-vectorized.ll
new file mode 100644
index 0000000..885418c
--- /dev/null
+++ b/test/Transforms/LoopVectorize/X86/already-vectorized.ll
@@ -0,0 +1,46 @@
+; RUN: opt < %s -debug-only=loop-vectorize -O3 -S 2>&1 | FileCheck %s
+; REQUIRES: asserts
+; We want to make sure that we don't even try to vectorize loops again
+; The vectorizer used to mark the un-vectorized loop only as already vectorized
+; thus, trying to vectorize the vectorized loop again
+
+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"
+target triple = "x86_64-unknown-linux-gnu"
+
+@a = external global [255 x i32]
+
+; Function Attrs: nounwind readonly uwtable
+define i32 @vect() {
+; CHECK: LV: Checking a loop in "vect"
+entry:
+ br label %for.body
+
+for.body: ; preds = %for.body, %entry
+; We need to make sure we did vectorize the loop
+; CHECK: LV: Found a loop: for.body
+; CHECK: LV: We can vectorize this loop!
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+ %red.05 = phi i32 [ 0, %entry ], [ %add, %for.body ]
+ %arrayidx = getelementptr inbounds [255 x i32]* @a, i64 0, i64 %indvars.iv
+ %0 = load i32* %arrayidx, align 4
+ %add = add nsw i32 %0, %red.05
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond = icmp eq i64 %indvars.iv.next, 255
+ br i1 %exitcond, label %for.end, label %for.body
+
+; If it did, we have two loops:
+; CHECK: vector.body:
+; CHECK: br {{.*}} label %vector.body, !llvm.loop [[vect:![0-9]+]]
+; CHECK: for.body:
+; CHECK: br {{.*}} label %for.body, !llvm.loop [[scalar:![0-9]+]]
+
+for.end: ; preds = %for.body
+ ret i32 %add
+}
+
+; Now, we check for the Hint metadata
+; CHECK: [[vect]] = metadata !{metadata [[vect]], metadata [[width:![0-9]+]], metadata [[unroll:![0-9]+]]}
+; CHECK: [[width]] = metadata !{metadata !"llvm.vectorizer.width", i32 1}
+; CHECK: [[unroll]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 1}
+; CHECK: [[scalar]] = metadata !{metadata [[scalar]], metadata [[width]], metadata [[unroll]]}
+