[llvm] edde46b - [test][IndVarSimplify][OpaquePtr] Precommit test

[Arthur Eubanks via llvm-commits]

Author: Arthur Eubanks
Date: 2022-02-17T08:48:07-08:00
New Revision: edde46b5d0120b14c8e005d96b92ea28f8c562f0

URL: https://github.com/llvm/llvm-project/commit/edde46b5d0120b14c8e005d96b92ea28f8c562f0
DIFF: https://github.com/llvm/llvm-project/commit/edde46b5d0120b14c8e005d96b92ea28f8c562f0.diff

LOG: [test][IndVarSimplify][OpaquePtr] Precommit test

Added: 
    llvm/test/Transforms/IndVarSimplify/opaque-ptr.ll

Modified: 
    

Removed: 
    


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diff  --git a/llvm/test/Transforms/IndVarSimplify/opaque-ptr.ll b/llvm/test/Transforms/IndVarSimplify/opaque-ptr.ll
new file mode 100644
index 000000000000..c6af7014ef53
--- /dev/null
+++ b/llvm/test/Transforms/IndVarSimplify/opaque-ptr.ll
@@ -0,0 +1,37 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=indvars -S < %s -opaque-pointers | FileCheck %s
+
+declare void @c(ptr)
+
+define void @test(ptr %arg) {
+; CHECK-LABEL: @test(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[O:%.*]] = getelementptr ptr, ptr [[ARG:%.*]], i64 16
+; CHECK-NEXT:    call void @c(ptr [[O]])
+; CHECK-NEXT:    br label [[LOOP:%.*]]
+; CHECK:       loop:
+; CHECK-NEXT:    [[IDX:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[LOOP]] ]
+; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[IDX]], 1
+; CHECK-NEXT:    [[C:%.*]] = icmp ne i32 [[INC]], 16
+; CHECK-NEXT:    call void @c(ptr [[O]])
+; CHECK-NEXT:    br i1 [[C]], label [[LOOP]], label [[END:%.*]]
+; CHECK:       end:
+; CHECK-NEXT:    ret void
+;
+entry:
+  %o = getelementptr ptr, ptr %arg, i64 16
+  call void @c(ptr %o)
+  br label %loop
+loop:
+  %idx = phi i32 [ 1, %entry ], [ %inc, %loop ]
+  %inc = add i32 %idx, 1
+  %c = icmp ne i32 %inc, 16
+  %p = getelementptr ptr, ptr %arg, i32 2
+  %p1 = getelementptr ptr, ptr %p, i32 %idx
+  %neg = sub i32 0, %idx
+  %p2 = getelementptr ptr, ptr %p1, i32 %neg
+  call void @c(ptr %p2)
+  br i1 %c, label %loop, label %end
+end:
+  ret void
+}