[PATCH] D145705: [CodeGenPrepare][NFC] Pre-commit test for memory use count fix

[Momchil Velikov via Phabricator via llvm-commits]

chill created this revision.
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https://reviews.llvm.org/D145705

Files:
  llvm/test/CodeGen/Generic/addr-use-count.ll


Index: llvm/test/CodeGen/Generic/addr-use-count.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/Generic/addr-use-count.ll
@@ -0,0 +1,70 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -codegenprepare < %s | FileCheck %s
+; REQUIRES: aarch64-registered-target
+
+; Test that `%addr` is sunk, even though the number of memory uses to scan exceeds the limit.
+
+target triple = "aarch64-linux"
+
+declare void @g(...)
+
+define void @f(ptr %p) {
+; CHECK-LABEL: @f(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[SUNKADDR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4
+; CHECK-NEXT:    [[T0:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T1:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T2:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T3:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T4:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T5:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T6:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T7:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T8:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T9:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T10:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T11:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T12:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T13:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T14:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T15:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T16:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T17:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[T18:%.*]] = load i32, ptr [[SUNKADDR]], align 4
+; CHECK-NEXT:    [[SUNKADDR1:%.*]] = getelementptr i8, ptr [[P]], i64 8
+; CHECK-NEXT:    [[T19:%.*]] = load i32, ptr [[SUNKADDR1]], align 4
+; CHECK-NEXT:    call void @g(i32 [[T0]], i32 [[T1]], i32 [[T2]], i32 [[T3]], i32 [[T4]], i32 [[T5]], i32 [[T6]], i32 [[T7]], i32 [[T8]], i32 [[T9]], i32 [[T10]], i32 [[T11]], i32 [[T12]], i32 [[T13]], i32 [[T14]], i32 [[T15]], i32 [[T16]], i32 [[T17]], i32 [[T18]], i32 [[T19]])
+; CHECK-NEXT:    ret void
+;
+entry:
+  %addr = getelementptr i8, ptr %p, i32 4
+  br label %exit
+
+exit:
+  %t0 = load i32, ptr %addr
+  %t1 = load i32, ptr %addr
+  %t2 = load i32, ptr %addr
+  %t3 = load i32, ptr %addr
+  %t4 = load i32, ptr %addr
+  %t5 = load i32, ptr %addr
+  %t6 = load i32, ptr %addr
+  %t7 = load i32, ptr %addr
+  %t8 = load i32, ptr %addr
+  %t9 = load i32, ptr %addr
+  %t10 = load i32, ptr %addr
+  %t11 = load i32, ptr %addr
+  %t12 = load i32, ptr %addr
+  %t13 = load i32, ptr %addr
+  %t14 = load i32, ptr %addr
+  %t15 = load i32, ptr %addr
+  %t16 = load i32, ptr %addr
+  %t17 = load i32, ptr %addr
+  %t18 = load i32, ptr %addr
+  %addr.1 = getelementptr i8, ptr %addr, i32 4
+  %t19 = load i32, ptr %addr.1
+
+  call void @g(i32 %t0, i32 %t1, i32 %t2, i32 %t3, i32 %t4, i32 %t5, i32 %t6, i32 %t7,
+  i32 %t8, i32 %t9, i32 %t10, i32 %t11, i32 %t12, i32 %t13, i32 %t14, i32 %t15, i32 %t16,
+  i32 %t17, i32 %t18, i32 %t19)
+  ret void
+}


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