From ea2c50c0416555a91cf963618f07c90a4c791708 Mon Sep 17 00:00:00 2001
From: Nadav Rotem <nrotem@apple.com>
Date: Thu, 4 Oct 2012 22:35:15 +0000
Subject: When merging connsecutive stores, use vectors to store the constant
 zero.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165267 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/MergeConsecutiveStores.ll | 38 +++++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)

(limited to 'test/CodeGen')

diff --git a/test/CodeGen/X86/MergeConsecutiveStores.ll b/test/CodeGen/X86/MergeConsecutiveStores.ll
index 79f8ee54a2..64825bac97 100644
--- a/test/CodeGen/X86/MergeConsecutiveStores.ll
+++ b/test/CodeGen/X86/MergeConsecutiveStores.ll
@@ -1,4 +1,4 @@
-; RUN: llc -march=x86-64 -mcpu=corei7 < %s | FileCheck %s
+; RUN: llc -march=x86-64 -mcpu=corei7 -mattr=+avx < %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"
 target triple = "x86_64-apple-macosx10.8.0"
@@ -6,7 +6,6 @@ target triple = "x86_64-apple-macosx10.8.0"
 %struct.A = type { i8, i8, i8, i8, i8, i8, i8, i8 }
 %struct.B = type { i32, i32, i32, i32, i32, i32, i32, i32 }
 
-; Move all of the constants using a single vector store.
 ; CHECK: merge_const_store
 ; save 1,2,3 ... as one big integer.
 ; CHECK: movabsq $578437695752307201
@@ -41,6 +40,40 @@ define void @merge_const_store(i32 %count, %struct.A* nocapture %p) nounwind uwt
   ret void
 }
 
+; Move the constants using a single vector store.
+; CHECK: merge_const_store_vec
+; CHECK: vmovups  %ymm0, (%rsi)
+; CHECK: ret
+define void @merge_const_store_vec(i32 %count, %struct.B* nocapture %p) nounwind uwtable noinline ssp {
+  %1 = icmp sgt i32 %count, 0
+  br i1 %1, label %.lr.ph, label %._crit_edge
+.lr.ph:
+  %i.02 = phi i32 [ %10, %.lr.ph ], [ 0, %0 ]
+  %.01 = phi %struct.B* [ %11, %.lr.ph ], [ %p, %0 ]
+  %2 = getelementptr inbounds %struct.B* %.01, i64 0, i32 0
+  store i32 0, i32* %2, align 4
+  %3 = getelementptr inbounds %struct.B* %.01, i64 0, i32 1
+  store i32 0, i32* %3, align 4
+  %4 = getelementptr inbounds %struct.B* %.01, i64 0, i32 2
+  store i32 0, i32* %4, align 4
+  %5 = getelementptr inbounds %struct.B* %.01, i64 0, i32 3
+  store i32 0, i32* %5, align 4
+  %6 = getelementptr inbounds %struct.B* %.01, i64 0, i32 4
+  store i32 0, i32* %6, align 4
+  %7 = getelementptr inbounds %struct.B* %.01, i64 0, i32 5
+  store i32 0, i32* %7, align 4
+  %8 = getelementptr inbounds %struct.B* %.01, i64 0, i32 6
+  store i32 0, i32* %8, align 4
+  %9 = getelementptr inbounds %struct.B* %.01, i64 0, i32 7
+  store i32 0, i32* %9, align 4
+  %10 = add nsw i32 %i.02, 1
+  %11 = getelementptr inbounds %struct.B* %.01, i64 1
+  %exitcond = icmp eq i32 %10, %count
+  br i1 %exitcond, label %._crit_edge, label %.lr.ph
+._crit_edge:
+  ret void
+}
+
 ; Move the first 4 constants as a single vector. Move the rest as scalars.
 ; CHECK: merge_nonconst_store
 ; CHECK: movl $67305985
@@ -223,7 +256,6 @@ block4:                                       ; preds = %4, %.lr.ph
   ret void
 }
 
-
 ;CHECK: merge_loads_no_align
 ; load:
 ;CHECK: movl
-- 
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