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author | Meador Inge <meadori@codesourcery.com> | 2012-11-11 06:49:03 +0000 |
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committer | Meador Inge <meadori@codesourcery.com> | 2012-11-11 06:49:03 +0000 |
commit | 26ebe398f2bddae5395b4ad8c7ffb5933b2230d1 (patch) | |
tree | 56510c6353092b9bbc76e8bafc74a028720e5000 /test/Transforms | |
parent | d324c48e5595235996aa2ddb08a331913f2037fd (diff) | |
download | llvm-26ebe398f2bddae5395b4ad8c7ffb5933b2230d1.tar.gz llvm-26ebe398f2bddae5395b4ad8c7ffb5933b2230d1.tar.bz2 llvm-26ebe398f2bddae5395b4ad8c7ffb5933b2230d1.tar.xz |
instcombine: Migrate memset optimizations
This patch migrates the memset optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167689 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
-rw-r--r-- | test/Transforms/InstCombine/memset-1.ll | 17 | ||||
-rw-r--r-- | test/Transforms/InstCombine/memset-2.ll | 17 | ||||
-rw-r--r-- | test/Transforms/SimplifyLibCalls/memset-64.ll | 12 | ||||
-rw-r--r-- | test/Transforms/SimplifyLibCalls/memset.ll | 12 |
4 files changed, 34 insertions, 24 deletions
diff --git a/test/Transforms/InstCombine/memset-1.ll b/test/Transforms/InstCombine/memset-1.ll new file mode 100644 index 0000000000..48b433e137 --- /dev/null +++ b/test/Transforms/InstCombine/memset-1.ll @@ -0,0 +1,17 @@ +; Test that the memset library call simplifier works correctly. +; +; RUN: opt < %s -instcombine -S | FileCheck %s + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" + +declare i8* @memset(i8*, i32, i32) + +; Check memset(mem1, val, size) -> llvm.memset(mem1, val, size, 1). + +define i8* @test_simplify1(i8* %mem, i32 %val, i32 %size) { +; CHECK: @test_simplify1 + %ret = call i8* @memset(i8* %mem, i32 %val, i32 %size) +; CHECK: call void @llvm.memset + ret i8* %ret +; CHECK: ret i8* %mem +} diff --git a/test/Transforms/InstCombine/memset-2.ll b/test/Transforms/InstCombine/memset-2.ll new file mode 100644 index 0000000000..8a9033302d --- /dev/null +++ b/test/Transforms/InstCombine/memset-2.ll @@ -0,0 +1,17 @@ +; Test that the memset library call simplifier works correctly. +; +; RUN: opt < %s -instcombine -S | FileCheck %s + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" + +declare i8 @memset(i8*, i32, i32) + +; Check that memset functions with the wrong prototype aren't simplified. + +define i8 @test_no_simplify1(i8* %mem, i32 %val, i32 %size) { +; CHECK: @test_no_simplify1 + %ret = call i8 @memset(i8* %mem, i32 %val, i32 %size) +; CHECK: call i8 @memset + ret i8 %ret +; CHECK: ret i8 %ret +} diff --git a/test/Transforms/SimplifyLibCalls/memset-64.ll b/test/Transforms/SimplifyLibCalls/memset-64.ll deleted file mode 100644 index 92412dee71..0000000000 --- a/test/Transforms/SimplifyLibCalls/memset-64.ll +++ /dev/null @@ -1,12 +0,0 @@ -; RUN: opt < %s -simplify-libcalls -S | grep "llvm.memset" -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" -target triple = "x86_64-pc-linux-gnu" - -define void @a(i8* %x) nounwind { -entry: - %call = call i8* @memset(i8* %x, i32 1, i64 100) ; <i8*> [#uses=0] - ret void -} - -declare i8* @memset(i8*, i32, i64) - diff --git a/test/Transforms/SimplifyLibCalls/memset.ll b/test/Transforms/SimplifyLibCalls/memset.ll deleted file mode 100644 index 853215a4d2..0000000000 --- a/test/Transforms/SimplifyLibCalls/memset.ll +++ /dev/null @@ -1,12 +0,0 @@ -; RUN: opt < %s -simplify-libcalls -S | grep "llvm.memset" -target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32" -target triple = "i686-pc-linux-gnu" - -define i8* @test(i8* %a, i32 %b, i32 %x) { -entry: - %call = call i8* @memset(i8* %a, i32 %b, i32 %x ) - ret i8* %call -} - -declare i8* @memset(i8*,i32,i32) - |