[llvm] r209715 - [AArch64] Add store post-index update folding regression tests for the load/store optimizer.
Tilmann Scheller
t.scheller at samsung.com
Tue May 27 23:43:00 PDT 2014
Author: tilmann
Date: Wed May 28 01:43:00 2014
New Revision: 209715
URL: http://llvm.org/viewvc/llvm-project?rev=209715&view=rev
Log:
[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.
Modified:
llvm/trunk/test/CodeGen/AArch64/ldst-opt.ll
Modified: llvm/trunk/test/CodeGen/AArch64/ldst-opt.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/ldst-opt.ll?rev=209715&r1=209714&r2=209715&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/ldst-opt.ll (original)
+++ llvm/trunk/test/CodeGen/AArch64/ldst-opt.ll Wed May 28 01:43:00 2014
@@ -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>)
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