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author | Tilmann Scheller <t.scheller@samsung.com> | 2014-05-28 06:43:00 +0000 |
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committer | Tilmann Scheller <t.scheller@samsung.com> | 2014-05-28 06:43:00 +0000 |
commit | d8ba67b97b57de51b302f4de8084b5c3dcce0280 (patch) | |
tree | acd2fcd840580f83e82d4d740acc669cfce33678 /test/CodeGen/AArch64 | |
parent | e8dee1a67b7feee07bd560d8e7828e475ff79cb8 (diff) | |
download | llvm-d8ba67b97b57de51b302f4de8084b5c3dcce0280.tar.gz llvm-d8ba67b97b57de51b302f4de8084b5c3dcce0280.tar.bz2 llvm-d8ba67b97b57de51b302f4de8084b5c3dcce0280.tar.xz |
[AArch64] Add store post-index update folding regression tests for the load/store optimizer.
Add regression tests for the following transformation:
str X, [x20]
...
add x20, x20, #32
->
str X, [x20], #32
with X being either w0, x0, s0, d0 or q0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209715 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/AArch64')
-rw-r--r-- | test/CodeGen/AArch64/ldst-opt.ll | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/ldst-opt.ll b/test/CodeGen/AArch64/ldst-opt.ll index 1ce5c954d6..5518db3275 100644 --- a/test/CodeGen/AArch64/ldst-opt.ll +++ b/test/CodeGen/AArch64/ldst-opt.ll @@ -294,6 +294,131 @@ exit: ret void } +; Check the following transform: +; +; str X, [x20] +; ... +; add x20, x20, #32 +; -> +; str X, [x20], #32 +; +; with X being either w0, x0, s0, d0 or q0. + +define void @store-post-indexed-word(i32* %array, i64 %count, i32 %val) nounwind { +; CHECK-LABEL: store-post-indexed-word +; CHECK: str w{{[0-9]+}}, [x{{[0-9]+}}], #16 +entry: + %gep1 = getelementptr i32* %array, i64 2 + br label %body + +body: + %iv2 = phi i32* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr i32* %iv2, i64 -1 + %load = load i32* %gep2 + call void @use-word(i32 %load) + store i32 %val, i32* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr i32* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-doubleword(i64* %array, i64 %count, i64 %val) nounwind { +; CHECK-LABEL: store-post-indexed-doubleword +; CHECK: str x{{[0-9]+}}, [x{{[0-9]+}}], #32 +entry: + %gep1 = getelementptr i64* %array, i64 2 + br label %body + +body: + %iv2 = phi i64* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr i64* %iv2, i64 -1 + %load = load i64* %gep2 + call void @use-doubleword(i64 %load) + store i64 %val, i64* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr i64* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-quadword(<2 x i64>* %array, i64 %count, <2 x i64> %val) nounwind { +; CHECK-LABEL: store-post-indexed-quadword +; CHECK: str q{{[0-9]+}}, [x{{[0-9]+}}], #64 +entry: + %gep1 = getelementptr <2 x i64>* %array, i64 2 + br label %body + +body: + %iv2 = phi <2 x i64>* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr <2 x i64>* %iv2, i64 -1 + %load = load <2 x i64>* %gep2 + call void @use-quadword(<2 x i64> %load) + store <2 x i64> %val, <2 x i64>* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr <2 x i64>* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-float(float* %array, i64 %count, float %val) nounwind { +; CHECK-LABEL: store-post-indexed-float +; CHECK: str s{{[0-9]+}}, [x{{[0-9]+}}], #16 +entry: + %gep1 = getelementptr float* %array, i64 2 + br label %body + +body: + %iv2 = phi float* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr float* %iv2, i64 -1 + %load = load float* %gep2 + call void @use-float(float %load) + store float %val, float* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr float* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + +define void @store-post-indexed-double(double* %array, i64 %count, double %val) nounwind { +; CHECK-LABEL: store-post-indexed-double +; CHECK: str d{{[0-9]+}}, [x{{[0-9]+}}], #32 +entry: + %gep1 = getelementptr double* %array, i64 2 + br label %body + +body: + %iv2 = phi double* [ %gep3, %body ], [ %gep1, %entry ] + %iv = phi i64 [ %iv.next, %body ], [ %count, %entry ] + %gep2 = getelementptr double* %iv2, i64 -1 + %load = load double* %gep2 + call void @use-double(double %load) + store double %val, double* %iv2 + %iv.next = add i64 %iv, -4 + %gep3 = getelementptr double* %iv2, i64 4 + %cond = icmp eq i64 %iv.next, 0 + br i1 %cond, label %exit, label %body + +exit: + ret void +} + declare void @use-word(i32) declare void @use-doubleword(i64) declare void @use-quadword(<2 x i64>) |