From f7e4e87df34fe140020180a0ea8f7bde14b3a62f Mon Sep 17 00:00:00 2001
From: Florian Hahn <flo@fhahn.com>
Date: Fri, 21 Aug 2020 09:50:01 +0100
Subject: [PATCH] [DSE,MemorySSA] Regenerate check lines for atomic.ll tests.

---
 .../Transforms/DeadStoreElimination/MSSA/atomic.ll | 77 ++++++++++++++--------
 1 file changed, 50 insertions(+), 27 deletions(-)

diff --git a/llvm/test/Transforms/DeadStoreElimination/MSSA/atomic.ll b/llvm/test/Transforms/DeadStoreElimination/MSSA/atomic.ll
index ba4bc2e..f2d5d28 100644
--- a/llvm/test/Transforms/DeadStoreElimination/MSSA/atomic.ll
+++ b/llvm/test/Transforms/DeadStoreElimination/MSSA/atomic.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -basic-aa -dse -enable-dse-memoryssa -S < %s | FileCheck %s
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
@@ -14,9 +15,11 @@ declare void @randomop(i32*)
 
 ; DSE across unordered store (allowed)
 define void @test1() {
-; CHECK-LABEL: test1
-; CHECK-NOT: store i32 0
-; CHECK: store i32 1
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:    store atomic i32 0, i32* @y unordered, align 4
+; CHECK-NEXT:    store i32 1, i32* @x, align 4
+; CHECK-NEXT:    ret void
+;
   store i32 0, i32* @x
   store atomic i32 0, i32* @y unordered, align 4
   store i32 1, i32* @x
@@ -25,9 +28,10 @@ define void @test1() {
 
 ; DSE remove unordered store (allowed)
 define void @test4() {
-; CHECK-LABEL: test4
-; CHECK-NOT: store atomic
-; CHECK: store i32 1
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:    store i32 1, i32* @x, align 4
+; CHECK-NEXT:    ret void
+;
   store atomic i32 0, i32* @x unordered, align 4
   store i32 1, i32* @x
   ret void
@@ -35,8 +39,10 @@ define void @test4() {
 
 ; DSE unordered store overwriting non-atomic store (allowed)
 define void @test5() {
-; CHECK-LABEL: test5
-; CHECK: store atomic i32 1
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:    store atomic i32 1, i32* @x unordered, align 4
+; CHECK-NEXT:    ret void
+;
   store i32 0, i32* @x
   store atomic i32 1, i32* @x unordered, align 4
   ret void
@@ -44,9 +50,9 @@ define void @test5() {
 
 ; DSE no-op unordered atomic store (allowed)
 define void @test6() {
-; CHECK-LABEL: test6
-; CHECK-NOT: store
-; CHECK: ret void
+; CHECK-LABEL: @test6(
+; CHECK-NEXT:    ret void
+;
   %x = load atomic i32, i32* @x unordered, align 4
   store atomic i32 %x, i32* @x unordered, align 4
   ret void
@@ -55,8 +61,11 @@ define void @test6() {
 ; DSE seq_cst store (be conservative; DSE doesn't have infrastructure
 ; to reason about atomic operations).
 define void @test7() {
-; CHECK-LABEL: test7
-; CHECK: store atomic
+; CHECK-LABEL: @test7(
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store atomic i32 0, i32* [[A]] seq_cst, align 4
+; CHECK-NEXT:    ret void
+;
   %a = alloca i32
   store atomic i32 0, i32* %a seq_cst, align 4
   ret void
@@ -65,9 +74,13 @@ define void @test7() {
 ; DSE and seq_cst load (be conservative; DSE doesn't have infrastructure
 ; to reason about atomic operations).
 define i32 @test8() {
-; CHECK-LABEL: test8
-; CHECK: store
-; CHECK: load atomic
+; CHECK-LABEL: @test8(
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    call void @randomop(i32* [[A]])
+; CHECK-NEXT:    store i32 0, i32* [[A]], align 4
+; CHECK-NEXT:    [[X:%.*]] = load atomic i32, i32* @x seq_cst, align 4
+; CHECK-NEXT:    ret i32 [[X]]
+;
   %a = alloca i32
   call void @randomop(i32* %a)
   store i32 0, i32* %a, align 4
@@ -77,9 +90,12 @@ define i32 @test8() {
 
 ; DSE across monotonic load (forbidden since the eliminated store is atomic)
 define i32 @test11() {
-; CHECK-LABEL: test11
-; CHECK: store atomic i32 0
-; CHECK: store atomic i32 1
+; CHECK-LABEL: @test11(
+; CHECK-NEXT:    store atomic i32 0, i32* @x monotonic, align 4
+; CHECK-NEXT:    [[X:%.*]] = load atomic i32, i32* @y monotonic, align 4
+; CHECK-NEXT:    store atomic i32 1, i32* @x monotonic, align 4
+; CHECK-NEXT:    ret i32 [[X]]
+;
   store atomic i32 0, i32* @x monotonic, align 4
   %x = load atomic i32, i32* @y monotonic, align 4
   store atomic i32 1, i32* @x monotonic, align 4
@@ -88,9 +104,12 @@ define i32 @test11() {
 
 ; DSE across monotonic store (forbidden since the eliminated store is atomic)
 define void @test12() {
-; CHECK-LABEL: test12
-; CHECK: store atomic i32 0
-; CHECK: store atomic i32 1
+; CHECK-LABEL: @test12(
+; CHECK-NEXT:    store atomic i32 0, i32* @x monotonic, align 4
+; CHECK-NEXT:    store atomic i32 42, i32* @y monotonic, align 4
+; CHECK-NEXT:    store atomic i32 1, i32* @x monotonic, align 4
+; CHECK-NEXT:    ret void
+;
   store atomic i32 0, i32* @x monotonic, align 4
   store atomic i32 42, i32* @y monotonic, align 4
   store atomic i32 1, i32* @x monotonic, align 4
@@ -99,9 +118,13 @@ define void @test12() {
 
 ; But DSE is not allowed across a release-acquire pair.
 define i32 @test15() {
-; CHECK-LABEL: test15
-; CHECK: store i32 0
-; CHECK: store i32 1
+; CHECK-LABEL: @test15(
+; CHECK-NEXT:    store i32 0, i32* @x, align 4
+; CHECK-NEXT:    store atomic i32 0, i32* @y release, align 4
+; CHECK-NEXT:    [[X:%.*]] = load atomic i32, i32* @y acquire, align 4
+; CHECK-NEXT:    store i32 1, i32* @x, align 4
+; CHECK-NEXT:    ret i32 [[X]]
+;
   store i32 0, i32* @x
   store atomic i32 0, i32* @y release, align 4
   %x = load atomic i32, i32* @y acquire, align 4
@@ -134,8 +157,8 @@ define void @test_store_atomic(i32* %Q) {
 ; We can NOT optimize release atomic loads or stores.
 define void @test_store_atomic_release(i32* %Q) {
 ; CHECK-LABEL: @test_store_atomic_release(
-; CHECK-NEXT:    load
-; CHECK-NEXT:    store atomic
+; CHECK-NEXT:    [[A:%.*]] = load i32, i32* [[Q:%.*]], align 4
+; CHECK-NEXT:    store atomic i32 [[A]], i32* [[Q]] release, align 4
 ; CHECK-NEXT:    ret void
 ;
   %a = load i32, i32* %Q
-- 
2.7.4