Update to LLVM 3.5a.

Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617

1 files changed, 83 insertions, 0 deletions

diff --git a/test/CodeGen/X86/dbg-changes-codegen.ll b/test/CodeGen/X86/dbg-changes-codegen.ll
new file mode 100644
index 0000000..0b17c45
--- /dev/null
+++ b/test/CodeGen/X86/dbg-changes-codegen.ll
@@ -0,0 +1,83 @@
+; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux | FileCheck %s
+
+; The Peephole optimizer should fold the load into the cmp even with debug info.
+; CHECK-LABEL: _ZN3Foo3batEv
+; CHECK-NOT: movq pfoo
+; CHECK: cmpq {{%[a-z]+}}, pfoo(%rip)
+;
+; CHECK-LABEL: _Z3bazv
+; CHECK-NOT: movq wibble2
+; CHECK: cmpq {{%[a-z]+}}, wibble2(%rip)
+
+; Regenerate test with this command: 
+;   clang -emit-llvm -S -O2 -g
+; from this source:
+;   struct Foo {
+;     bool bat();
+;     bool operator==(Foo &arg) { return (this == &arg); }
+;   };
+;   Foo *pfoo;
+;   bool Foo::bat() { return (*this == *pfoo); }
+;
+;   struct Wibble {
+;     int x;
+;   } *wibble1, *wibble2;
+;   struct Flibble {
+;     void bar(Wibble *c) {
+;       if (c < wibble2)
+;         wibble2 = 0;
+;       c->x = 0;
+;     }
+;   } flibble;
+;   void baz() { flibble.bar(wibble1); }
+
+%struct.Foo = type { i8 }
+%struct.Wibble = type { i32 }
+%struct.Flibble = type { i8 }
+
+@pfoo = global %struct.Foo* null, align 8
+@wibble1 = global %struct.Wibble* null, align 8
+@wibble2 = global %struct.Wibble* null, align 8
+@flibble = global %struct.Flibble zeroinitializer, align 1
+
+; Function Attrs: nounwind readonly uwtable
+define zeroext i1 @_ZN3Foo3batEv(%struct.Foo* %this) #0 align 2 {
+entry:
+  %0 = load %struct.Foo** @pfoo, align 8
+  tail call void @llvm.dbg.value(metadata !{%struct.Foo* %0}, i64 0, metadata !62)
+  %cmp.i = icmp eq %struct.Foo* %0, %this
+  ret i1 %cmp.i
+}
+
+; Function Attrs: nounwind uwtable
+define void @_Z3bazv() #1 {
+entry:
+  %0 = load %struct.Wibble** @wibble1, align 8
+  tail call void @llvm.dbg.value(metadata !64, i64 0, metadata !65)
+  %1 = load %struct.Wibble** @wibble2, align 8
+  %cmp.i = icmp ugt %struct.Wibble* %1, %0
+  br i1 %cmp.i, label %if.then.i, label %_ZN7Flibble3barEP6Wibble.exit
+
+if.then.i:                                        ; preds = %entry
+  store %struct.Wibble* null, %struct.Wibble** @wibble2, align 8
+  br label %_ZN7Flibble3barEP6Wibble.exit
+
+_ZN7Flibble3barEP6Wibble.exit:                    ; preds = %entry, %if.then.i
+  %x.i = getelementptr inbounds %struct.Wibble* %0, i64 0, i32 0
+  store i32 0, i32* %x.i, align 4
+  ret void
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata) #2
+
+attributes #0 = { nounwind readonly uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #2 = { nounwind readnone }
+
+
+!17 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, null} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from Foo]
+!45 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from Flibble]
+!62 = metadata !{i32 786689, null, metadata !"arg", null, i32 33554436, metadata !17, i32 0, null} ; [ DW_TAG_arg_variable ] [arg] [line 4]
+!64 = metadata !{%struct.Flibble* undef}
+!65 = metadata !{i32 786689, null, metadata !"this", null, i32 16777229, metadata !45, i32 1088, null} ; [ DW_TAG_arg_variable ] [this] [line 13]