Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/Analysis/MemorySSA/atomic-clobber.ll

@@ -1,119 +0,0 @@
-; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
-; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
-;
-; Ensures that atomic loads count as MemoryDefs
-
-; CHECK-LABEL: define i32 @foo
-define i32 @foo(i32* %a, i32* %b) {
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: store i32 4
-  store i32 4, i32* %a, align 4
-; CHECK: 2 = MemoryDef(1)
-; CHECK-NEXT: %1 = load atomic i32
-  %1 = load atomic i32, i32* %b acquire, align 4
-; CHECK: MemoryUse(2)
-; CHECK-NEXT: %2 = load i32
-  %2 = load i32, i32* %a, align 4
-  %3 = add i32 %1, %2
-  ret i32 %3
-}
-
-; CHECK-LABEL: define void @bar
-define void @bar(i32* %a) {
-; CHECK: MemoryUse(liveOnEntry)
-; CHECK-NEXT: load atomic i32, i32* %a unordered, align 4
-  load atomic i32, i32* %a unordered, align 4
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: load atomic i32, i32* %a monotonic, align 4
-  load atomic i32, i32* %a monotonic, align 4
-; CHECK: 2 = MemoryDef(1)
-; CHECK-NEXT: load atomic i32, i32* %a acquire, align 4
-  load atomic i32, i32* %a acquire, align 4
-; CHECK: 3 = MemoryDef(2)
-; CHECK-NEXT: load atomic i32, i32* %a seq_cst, align 4
-  load atomic i32, i32* %a seq_cst, align 4
-  ret void
-}
-
-; CHECK-LABEL: define void @baz
-define void @baz(i32* %a) {
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: %1 = load atomic i32
-  %1 = load atomic i32, i32* %a acquire, align 4
-; CHECK: MemoryUse(1)
-; CHECK-NEXT: %2 = load atomic i32, i32* %a unordered, align 4
-  %2 = load atomic i32, i32* %a unordered, align 4
-; CHECK: 2 = MemoryDef(1)
-; CHECK-NEXT: %3 = load atomic i32, i32* %a monotonic, align 4
-  %3 = load atomic i32, i32* %a monotonic, align 4
-  ret void
-}
-
-; CHECK-LABEL: define void @fences
-define void @fences(i32* %a) {
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: fence acquire
-  fence acquire
-; CHECK: MemoryUse(1)
-; CHECK-NEXT: %1 = load i32, i32* %a
-  %1 = load i32, i32* %a
-
-; CHECK: 2 = MemoryDef(1)
-; CHECK-NEXT: fence release
-  fence release
-; CHECK: MemoryUse(2)
-; CHECK-NEXT: %2 = load i32, i32* %a
-  %2 = load i32, i32* %a
-
-; CHECK: 3 = MemoryDef(2)
-; CHECK-NEXT: fence acq_rel
-  fence acq_rel
-; CHECK: MemoryUse(3)
-; CHECK-NEXT: %3 = load i32, i32* %a
-  %3 = load i32, i32* %a
-
-; CHECK: 4 = MemoryDef(3)
-; CHECK-NEXT: fence seq_cst
-  fence seq_cst
-; CHECK: MemoryUse(4)
-; CHECK-NEXT: %4 = load i32, i32* %a
-  %4 = load i32, i32* %a
-  ret void
-}
-
-; CHECK-LABEL: define void @seq_cst_clobber
-define void @seq_cst_clobber(i32* noalias %a, i32* noalias %b) {
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: %1 = load atomic i32, i32* %a monotonic, align 4
-  load atomic i32, i32* %a monotonic, align 4
-
-; CHECK: 2 = MemoryDef(1)
-; CHECK-NEXT: %2 = load atomic i32, i32* %a seq_cst, align 4
-  load atomic i32, i32* %a seq_cst, align 4
-
-; CHECK: 3 = MemoryDef(2)
-; CHECK-NEXT: load atomic i32, i32* %a monotonic, align 4
-  load atomic i32, i32* %a monotonic, align 4
-
-  ret void
-}
-
-; Ensure that AA hands us MRI_Mod on unreorderable atomic ops.
-;
-; This test is a bit implementation-specific. In particular, it depends on that
-; we pass cmpxchg-load queries to AA, without trying to reason about them on
-; our own.
-;
-; If AA gets more aggressive, we can find another way.
-;
-; CHECK-LABEL: define void @check_aa_is_sane
-define void @check_aa_is_sane(i32* noalias %a, i32* noalias %b) {
-; CHECK: 1 = MemoryDef(liveOnEntry)
-; CHECK-NEXT: cmpxchg i32* %a, i32 0, i32 1 acquire acquire
-  cmpxchg i32* %a, i32 0, i32 1 acquire acquire
-; CHECK: MemoryUse(1)
-; CHECK-NEXT: load i32, i32* %b, align 4
-  load i32, i32* %b, align 4
-
-  ret void
-}