From 34eb2406b41854fc8df688fca7c0129f77d768f7 Mon Sep 17 00:00:00 2001
From: Arnold Schwaighofer <aschwaighofer@apple.com>
Date: Tue, 25 Jun 2013 19:14:09 +0000
Subject: X86 cost model: Vectorizing integer division is a bad idea

radar://14057959

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184872 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Analysis/CostModel/X86/div.ll | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 test/Analysis/CostModel/X86/div.ll

(limited to 'test/Analysis')

diff --git a/test/Analysis/CostModel/X86/div.ll b/test/Analysis/CostModel/X86/div.ll
new file mode 100644
index 0000000..c7d6517
--- /dev/null
+++ b/test/Analysis/CostModel/X86/div.ll
@@ -0,0 +1,32 @@
+; RUN: opt -mtriple=x86_64-apple-darwin -mcpu=core2 -cost-model -analyze < %s | FileCheck --check-prefix=SSE2 %s
+; RUN: opt -mtriple=x86_64-apple-darwin -mcpu=core-avx2 -cost-model -analyze < %s | FileCheck --check-prefix=AVX2 %s
+
+
+define void @div_sse() {
+  ; SSE2: div_sse
+  ; SSE2: cost of 320 {{.*}} sdiv
+  %a0 = sdiv <16 x i8> undef, undef
+  ; SSE2: cost of 160 {{.*}} sdiv
+  %a1 = sdiv <8 x i16> undef, undef
+  ; SSE2: cost of 80 {{.*}} sdiv
+  %a2 = sdiv <4 x i32> undef, undef
+  ; SSE2: cost of 40 {{.*}} sdiv
+  %a3 = sdiv <2 x i32> undef, undef
+  ret void
+}
+; SSE2: div_avx
+
+define void @div_avx() {
+  ; AVX2: div_avx
+  ; AVX2: cost of 640 {{.*}} sdiv
+  %a0 = sdiv <32 x i8> undef, undef
+  ; AVX2: cost of 320 {{.*}} sdiv
+  %a1 = sdiv <16 x i16> undef, undef
+  ; AVX2: cost of 160 {{.*}} sdiv
+  %a2 = sdiv <8 x i32> undef, undef
+  ; AVX2: cost of 80 {{.*}} sdiv
+  %a3 = sdiv <4 x i32> undef, undef
+  ret void
+}
+
+
-- 
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