From 0d973b565c8bc45041c920e5aa42d45032a96f19 Mon Sep 17 00:00:00 2001 From: Erik Eckstein Date: Wed, 30 Sep 2015 17:28:19 +0000 Subject: [PATCH] SLPVectorizer: add a test to check if the minimum region size works. This is an addition to rL248917. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@248923 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../SLPVectorizer/X86/schedule_budget.ll | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/test/Transforms/SLPVectorizer/X86/schedule_budget.ll b/test/Transforms/SLPVectorizer/X86/schedule_budget.ll index 348c9545041..2cb2373381c 100644 --- a/test/Transforms/SLPVectorizer/X86/schedule_budget.ll +++ b/test/Transforms/SLPVectorizer/X86/schedule_budget.ll @@ -14,8 +14,15 @@ declare void @unknown() ; CHECK: load float ; CHECK: load float ; CHECK: call void @unknown -define void @test(float * %a, float * %b) { +; CHECK: store float +; CHECK: store float +; CHECK: store float +; CHECK: store float +; CHECK: load <4 x float> +; CHECK: store <4 x float> +define void @test(float * %a, float * %b, float * %c, float * %d) { entry: + ; Don't vectorize these loads. %l0 = load float, float* %a %a1 = getelementptr inbounds float, float* %a, i64 1 %l1 = load float, float* %a1 @@ -54,6 +61,7 @@ entry: call void @unknown() call void @unknown() + ; Don't vectorize these stores because their operands are too far away. store float %l0, float* %b %b1 = getelementptr inbounds float, float* %b, i64 1 store float %l1, float* %b1 @@ -61,6 +69,25 @@ entry: store float %l2, float* %b2 %b3 = getelementptr inbounds float, float* %b, i64 3 store float %l3, float* %b3 + + ; But still vectorize the following instructions, because even if the budget + ; is exceeded there is a minimum region size. + %l4 = load float, float* %c + %c1 = getelementptr inbounds float, float* %c, i64 1 + %l5 = load float, float* %c1 + %c2 = getelementptr inbounds float, float* %c, i64 2 + %l6 = load float, float* %c2 + %c3 = getelementptr inbounds float, float* %c, i64 3 + %l7 = load float, float* %c3 + + store float %l4, float* %d + %d1 = getelementptr inbounds float, float* %d, i64 1 + store float %l5, float* %d1 + %d2 = getelementptr inbounds float, float* %d, i64 2 + store float %l6, float* %d2 + %d3 = getelementptr inbounds float, float* %d, i64 3 + store float %l7, float* %d3 + ret void } -- 2.34.1