[Hexagon] Diagnose misaligned absolute loads and stores

Differential Revision: https://reviews.llvm.org/D50405

llvm-svn: 339272

2 files changed, 76 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Hexagon/misaligned-const-load.ll b/llvm/test/CodeGen/Hexagon/misaligned-const-load.ll
new file mode 100644
index 00000000000..0a437964cc7
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/misaligned-const-load.ll
@@ -0,0 +1,38 @@
+; RUN: not llc -march=hexagon < %s 2>&1 | FileCheck %s
+
+; Check that the misaligned load is diagnosed.
+; CHECK: LLVM ERROR: Misaligned constant address: 0x00012345 has alignment 1, but the memory access requires 4, at misaligned-const-load.c:2:10
+
+target triple = "hexagon"
+
+define i32 @bad_load() #0 !dbg !10 {
+entry:
+  %0 = load i32, i32* inttoptr (i32 74565 to i32*), align 4, !dbg !13, !tbaa !14
+  ret i32 %0, !dbg !18
+}
+
+attributes #0 = { norecurse nounwind readonly "target-cpu"="hexagonv60" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!6, !7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (http://llvm.org/git/clang.git 3fb90d137ea16e5c3a4580b9db5fd18d93df1a90) (http://llvm.org/git/llvm.git daf385e5698c00fdd693fac736acc96b95ccccd3)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
+!1 = !DIFile(filename: "misaligned-const-load.c", directory: "/test")
+!2 = !{}
+!3 = !{!4}
+!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 32)
+!5 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = !{i32 1, !"wchar_size", i32 4}
+!9 = !{!"clang version 8.0.0 (http://llvm.org/git/clang.git 3fb90d137ea16e5c3a4580b9db5fd18d93df1a90) (http://llvm.org/git/llvm.git daf385e5698c00fdd693fac736acc96b95ccccd3)"}
+!10 = distinct !DISubprogram(name: "bad_load", scope: !1, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !2)
+!11 = !DISubroutineType(types: !12)
+!12 = !{!5}
+!13 = !DILocation(line: 2, column: 10, scope: !10)
+!14 = !{!15, !15, i64 0}
+!15 = !{!"int", !16, i64 0}
+!16 = !{!"omnipotent char", !17, i64 0}
+!17 = !{!"Simple C/C++ TBAA"}
+!18 = !DILocation(line: 2, column: 3, scope: !10)
diff --git a/llvm/test/CodeGen/Hexagon/misaligned-const-store.ll b/llvm/test/CodeGen/Hexagon/misaligned-const-store.ll
new file mode 100644
index 00000000000..b24cd778449
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/misaligned-const-store.ll
@@ -0,0 +1,38 @@
+; RUN: not llc -march=hexagon < %s 2>&1 | FileCheck %s
+
+; Check that the misaligned store is diagnosed.
+; CHECK: LLVM ERROR: Misaligned constant address: 0x00012345 has alignment 1, but the memory access requires 4, at misaligned-const-store.c:2:10
+
+target triple = "hexagon"
+
+define void @bad_store(i32 %a0) #0 !dbg !10 {
+entry:
+  store i32 %a0, i32* inttoptr (i32 74565 to i32*), align 4, !dbg !13, !tbaa !14
+  ret void, !dbg !18
+}
+
+attributes #0 = { norecurse nounwind readonly "target-cpu"="hexagonv60" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!6, !7, !8}
+!llvm.ident = !{!9}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 (http://llvm.org/git/clang.git 3fb90d137ea16e5c3a4580b9db5fd18d93df1a90) (http://llvm.org/git/llvm.git daf385e5698c00fdd693fac736acc96b95ccccd3)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3)
+!1 = !DIFile(filename: "misaligned-const-store.c", directory: "/test")
+!2 = !{}
+!3 = !{!4}
+!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 32)
+!5 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = !{i32 1, !"wchar_size", i32 4}
+!9 = !{!"clang version 8.0.0 (http://llvm.org/git/clang.git 3fb90d137ea16e5c3a4580b9db5fd18d93df1a90) (http://llvm.org/git/llvm.git daf385e5698c00fdd693fac736acc96b95ccccd3)"}
+!10 = distinct !DISubprogram(name: "bad_store", scope: !1, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !2)
+!11 = !DISubroutineType(types: !12)
+!12 = !{!5}
+!13 = !DILocation(line: 2, column: 10, scope: !10)
+!14 = !{!15, !15, i64 0}
+!15 = !{!"int", !16, i64 0}
+!16 = !{!"omnipotent char", !17, i64 0}
+!17 = !{!"Simple C/C++ TBAA"}
+!18 = !DILocation(line: 2, column: 3, scope: !10)