Move catchpad-phi-cast.ll to the X86 specific subdirectory

It is X86 specific and will not be properly exercised unless LLVM is
built with the X86 target.

llvm-svn: 255426

1 files changed, 118 insertions, 0 deletions

diff --git a/llvm/test/Transforms/CodeGenPrepare/X86/catchpad-phi-cast.ll b/llvm/test/Transforms/CodeGenPrepare/X86/catchpad-phi-cast.ll
new file mode 100644
index 00000000000..8c5e01e3634
--- /dev/null
+++ b/llvm/test/Transforms/CodeGenPrepare/X86/catchpad-phi-cast.ll
@@ -0,0 +1,118 @@
+; RUN: opt -codegenprepare -S < %s | FileCheck %s
+
+; The following target lines are needed for the test to exercise what it should.
+; Without these lines, CodeGenPrepare does not try to sink the bitcasts.
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-windows-msvc"
+
+declare i32 @__CxxFrameHandler3(...)
+
+declare void @f()
+
+declare void @g(i8*)
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
+
+; CodeGenPrepare will want to sink these bitcasts, but it selects the catchpad
+; blocks as the place to which the bitcast should be sunk.  Since catchpads
+; do not allow non-phi instructions before the terminator, this isn't possible. 
+
+; CHECK-LABEL: @test(
+define void @test(i32* %addr) personality i32 (...)* @__CxxFrameHandler3 {
+entry:
+  %x = getelementptr i32, i32* %addr, i32 1
+  %p1 = bitcast i32* %x to i8*
+  invoke void @f()
+          to label %invoke.cont unwind label %catch1
+
+; CHECK: invoke.cont:
+; CHECK-NEXT: %y = getelementptr i32, i32* %addr, i32 2
+invoke.cont:
+  %y = getelementptr i32, i32* %addr, i32 2
+  %p2 = bitcast i32* %y to i8*
+  invoke void @f()
+          to label %done unwind label %catch2
+
+done:
+  ret void
+
+catch1:
+  %cs1 = catchswitch within none [label %handler1] unwind to caller
+
+handler1:
+  %cp1 = catchpad within %cs1 []
+  br label %catch.shared
+; CHECK: handler1:
+; CHECK-NEXT: catchpad within %cs1
+; CHECK: %[[p1:[0-9]+]] = bitcast i32* %x to i8*
+
+catch2:
+  %cs2 = catchswitch within none [label %handler2] unwind to caller
+
+handler2:
+  %cp2 = catchpad within %cs2 []
+  br label %catch.shared
+; CHECK: handler2:
+; CHECK: catchpad within %cs2
+; CHECK: %[[p2:[0-9]+]] = bitcast i32* %y to i8*
+
+; CHECK: catch.shared:
+; CHECK-NEXT: %p = phi i8* [ %[[p1]], %handler1 ], [ %[[p2]], %handler2 ]
+catch.shared:
+  %p = phi i8* [ %p1, %handler1 ], [ %p2, %handler2 ]
+  call void @g(i8* %p)
+  unreachable
+}
+
+; CodeGenPrepare will want to hoist these llvm.dbg.value calls to the phi, but
+; there is no insertion point in a catchpad block.
+
+; CHECK-LABEL: @test_dbg_value(
+define void @test_dbg_value() personality i32 (...)* @__CxxFrameHandler3 {
+entry:
+  %a = alloca i8
+  %b = alloca i8
+  invoke void @f() to label %next unwind label %catch.dispatch
+next:
+  invoke void @f() to label %ret unwind label %catch.dispatch
+ret:
+  ret void
+
+catch.dispatch:
+  %p = phi i8* [%a, %entry], [%b, %next]
+  %cs1 = catchswitch within none [label %catch] unwind to caller
+
+catch:
+  %cp1 = catchpad within %cs1 []
+  tail call void @llvm.dbg.value(metadata i8* %p, i64 0, metadata !11, metadata !13), !dbg !14
+  call void @g(i8* %p)
+  catchret from %cp1 to label %ret
+
+; CHECK: catch.dispatch:
+; CHECK-NEXT: phi i8
+; CHECK-NEXT: catchswitch
+; CHECK-NOT: llvm.dbg.value
+
+; CHECK: catch:
+; CHECK-NEXT: catchpad
+; CHECK-NEXT: call void @llvm.dbg.value
+}
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8, !9}
+!llvm.ident = !{!10}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 254906) (llvm/trunk 254917)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: null, subprograms: !3)
+!1 = !DIFile(filename: "t.c", directory: "D:\5Csrc\5Cllvm\5Cbuild")
+!3 = !{!4}
+!4 = distinct !DISubprogram(name: "test_dbg_value", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: false, variables: null)
+!5 = !DISubroutineType(types: !6)
+!6 = !{null}
+!7 = !{i32 2, !"Dwarf Version", i32 4}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
+!9 = !{i32 1, !"PIC Level", i32 2}
+!10 = !{!"clang version 3.8.0 (trunk 254906) (llvm/trunk 254917)"}
+!11 = !DILocalVariable(name: "p", scope: !4, file: !1, line: 2, type: !12)
+!12 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!13 = !DIExpression()
+!14 = !DILocation(line: 2, column: 8, scope: !4)
+!15 = !DILocation(line: 3, column: 1, scope: !4)