[LoadStoreVectorizer] Add test for inaccessiblememonly call (NFC)

Author: nikic

llvm/test/Transforms/LoadStoreVectorizer/int_sideeffect.ll

@@ -1,27 +1,80 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -S < %s -load-store-vectorizer | FileCheck %s
 ; RUN: opt -S < %s -passes='function(load-store-vectorizer)' | FileCheck %s
 
 declare void @llvm.sideeffect()
 
 ; load-store vectorization across a @llvm.sideeffect.
 
-; CHECK-LABEL: test
-; CHECK: load <4 x float>
-; CHECK: store <4 x float>
-define void @test(float* %p) {
-    %p0 = getelementptr float, float* %p, i64 0
-    %p1 = getelementptr float, float* %p, i64 1
-    %p2 = getelementptr float, float* %p, i64 2
-    %p3 = getelementptr float, float* %p, i64 3
-    %l0 = load float, float* %p0, align 16
-    %l1 = load float, float* %p1
-    %l2 = load float, float* %p2
-    call void @llvm.sideeffect()
-    %l3 = load float, float* %p3
-    store float %l0, float* %p0, align 16
-    call void @llvm.sideeffect()
-    store float %l1, float* %p1
-    store float %l2, float* %p2
-    store float %l3, float* %p3
-    ret void
+define void @test_sideeffect(float* %p) {
+; CHECK-LABEL: @test_sideeffect(
+; CHECK-NEXT:    [[P0:%.*]] = getelementptr float, float* [[P:%.*]], i64 0
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast float* [[P0]] to <4 x float>*
+; CHECK-NEXT:    [[TMP2:%.*]] = load <4 x float>, <4 x float>* [[TMP1]], align 16
+; CHECK-NEXT:    [[L01:%.*]] = extractelement <4 x float> [[TMP2]], i32 0
+; CHECK-NEXT:    [[L12:%.*]] = extractelement <4 x float> [[TMP2]], i32 1
+; CHECK-NEXT:    [[L23:%.*]] = extractelement <4 x float> [[TMP2]], i32 2
+; CHECK-NEXT:    [[L34:%.*]] = extractelement <4 x float> [[TMP2]], i32 3
+; CHECK-NEXT:    call void @llvm.sideeffect()
+; CHECK-NEXT:    call void @llvm.sideeffect()
+; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <4 x float> undef, float [[L01]], i32 0
+; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <4 x float> [[TMP3]], float [[L12]], i32 1
+; CHECK-NEXT:    [[TMP5:%.*]] = insertelement <4 x float> [[TMP4]], float [[L23]], i32 2
+; CHECK-NEXT:    [[TMP6:%.*]] = insertelement <4 x float> [[TMP5]], float [[L34]], i32 3
+; CHECK-NEXT:    [[TMP7:%.*]] = bitcast float* [[P0]] to <4 x float>*
+; CHECK-NEXT:    store <4 x float> [[TMP6]], <4 x float>* [[TMP7]], align 16
+; CHECK-NEXT:    ret void
+;
+  %p0 = getelementptr float, float* %p, i64 0
+  %p1 = getelementptr float, float* %p, i64 1
+  %p2 = getelementptr float, float* %p, i64 2
+  %p3 = getelementptr float, float* %p, i64 3
+  %l0 = load float, float* %p0, align 16
+  %l1 = load float, float* %p1
+  %l2 = load float, float* %p2
+  call void @llvm.sideeffect()
+  %l3 = load float, float* %p3
+  store float %l0, float* %p0, align 16
+  call void @llvm.sideeffect()
+  store float %l1, float* %p1
+  store float %l2, float* %p2
+  store float %l3, float* %p3
+  ret void
+}
+
+declare void @foo()
+
+define void @test_inaccessiblememonly(float* %p) {
+; CHECK-LABEL: @test_inaccessiblememonly(
+; CHECK-NEXT:    [[P0:%.*]] = getelementptr float, float* [[P:%.*]], i64 0
+; CHECK-NEXT:    [[P1:%.*]] = getelementptr float, float* [[P]], i64 1
+; CHECK-NEXT:    [[P2:%.*]] = getelementptr float, float* [[P]], i64 2
+; CHECK-NEXT:    [[P3:%.*]] = getelementptr float, float* [[P]], i64 3
+; CHECK-NEXT:    [[L0:%.*]] = load float, float* [[P0]], align 16
+; CHECK-NEXT:    [[L1:%.*]] = load float, float* [[P1]], align 4
+; CHECK-NEXT:    [[L2:%.*]] = load float, float* [[P2]], align 4
+; CHECK-NEXT:    call void @foo() #[[ATTR1:[0-9]+]]
+; CHECK-NEXT:    [[L3:%.*]] = load float, float* [[P3]], align 4
+; CHECK-NEXT:    store float [[L0]], float* [[P0]], align 16
+; CHECK-NEXT:    call void @foo() #[[ATTR1]]
+; CHECK-NEXT:    store float [[L1]], float* [[P1]], align 4
+; CHECK-NEXT:    store float [[L2]], float* [[P2]], align 4
+; CHECK-NEXT:    store float [[L3]], float* [[P3]], align 4
+; CHECK-NEXT:    ret void
+;
+  %p0 = getelementptr float, float* %p, i64 0
+  %p1 = getelementptr float, float* %p, i64 1
+  %p2 = getelementptr float, float* %p, i64 2
+  %p3 = getelementptr float, float* %p, i64 3
+  %l0 = load float, float* %p0, align 16
+  %l1 = load float, float* %p1
+  %l2 = load float, float* %p2
+  call void @foo() inaccessiblememonly nounwind
+  %l3 = load float, float* %p3
+  store float %l0, float* %p0, align 16
+  call void @foo() inaccessiblememonly nounwind
+  store float %l1, float* %p1
+  store float %l2, float* %p2
+  store float %l3, float* %p3
+  ret void
 }