Handle 'r' inline asm constraint

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79648 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 103 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/2009-08-21-InlineAsmRConstraint.ll b/test/CodeGen/SystemZ/2009-08-21-InlineAsmRConstraint.ll
new file mode 100644
index 0000000000..f8f5a28ef2
--- /dev/null
+++ b/test/CodeGen/SystemZ/2009-08-21-InlineAsmRConstraint.ll
@@ -0,0 +1,103 @@
+; RUN: llvm-as < %s | llc
+target datalayout = "E-p:64:64:64-i1:8:8-i8:8:16-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:16:16-f128:128:128"
+target triple = "s390x-ibm-linux-gnu"
+
+%0 = type { i64 }
+%struct.anon = type { %struct.dwarf_fde* }
+%struct.dwarf_fde = type <{ i32, i32, [0 x i8] }>
+%struct.object = type { i8*, i8*, i8*, %struct.anon, %0, %struct.object* }
+
+@__dso_handle = hidden global i8* null            ; <i8**> [#uses=0]
+@__CTOR_LIST__ = internal global [1 x void ()*] [void ()* inttoptr (i64 -1 to void ()*)], section ".ctors", align 8 ; <[1 x void ()*]*> [#uses=1]
+@__DTOR_LIST__ = internal global [1 x void ()*] [void ()* inttoptr (i64 -1 to void ()*)], section ".dtors", align 8 ; <[1 x void ()*]*> [#uses=2]
+@__EH_FRAME_BEGIN__ = internal constant [0 x i8] zeroinitializer, section ".eh_frame", align 4 ; <[0 x i8]*> [#uses=1]
+@__JCR_LIST__ = internal global [0 x i8*] zeroinitializer, section ".jcr", align 8 ; <[0 x i8*]*> [#uses=2]
+@completed.1298.b = internal global i1 false      ; <i1*> [#uses=2]
+@p.1296 = internal global void ()** getelementptr ([1 x void ()*]* @__DTOR_LIST__, i64 1, i64 0) ; <void ()***> [#uses=3]
+@object.1314 = internal global %struct.object zeroinitializer ; <%struct.object*> [#uses=1]
+@llvm.used = appending global [7 x i8*] [i8* bitcast ([1 x void ()*]* @__CTOR_LIST__ to i8*), i8* bitcast ([1 x void ()*]* @__DTOR_LIST__ to i8*), i8* getelementptr inbounds ([0 x i8]* @__EH_FRAME_BEGIN__, i32 0, i32 0), i8* bitcast (void ()* @__do_global_dtors_aux to i8*), i8* bitcast (void ()* @call___do_global_dtors_aux to i8*), i8* bitcast (void ()* @frame_dummy to i8*), i8* bitcast (void ()* @call_frame_dummy to i8*)], section "llvm.metadata" ; <[7 x i8*]*> [#uses=0]
+
+define internal void @__do_global_dtors_aux() nounwind {
+entry:
+  %.b = load i1* @completed.1298.b                ; <i1> [#uses=1]
+  br i1 %.b, label %return, label %bb1.preheader
+
+bb1.preheader:                                    ; preds = %entry
+  %0 = load void ()*** @p.1296, align 8           ; <void ()**> [#uses=2]
+  %1 = load void ()** %0, align 8                 ; <void ()*> [#uses=2]
+  %2 = icmp eq void ()* %1, null                  ; <i1> [#uses=1]
+  br i1 %2, label %bb2, label %bb
+
+bb:                                               ; preds = %bb, %bb1.preheader
+  %3 = phi void ()** [ %0, %bb1.preheader ], [ %6, %bb ] ; <void ()**> [#uses=1]
+  %4 = phi void ()* [ %1, %bb1.preheader ], [ %7, %bb ] ; <void ()*> [#uses=1]
+  %5 = getelementptr inbounds void ()** %3, i64 1 ; <void ()**> [#uses=1]
+  store void ()** %5, void ()*** @p.1296, align 8
+  tail call void %4() nounwind
+  %6 = load void ()*** @p.1296, align 8           ; <void ()**> [#uses=2]
+  %7 = load void ()** %6, align 8                 ; <void ()*> [#uses=2]
+  %8 = icmp eq void ()* %7, null                  ; <i1> [#uses=1]
+  br i1 %8, label %bb2, label %bb
+
+bb2:                                              ; preds = %bb, %bb1.preheader
+  br i1 icmp ne (i8* (i8*)* @__deregister_frame_info, i8* (i8*)* null), label %bb3, label %bb4
+
+bb3:                                              ; preds = %bb2
+  %9 = tail call i8* @__deregister_frame_info(i8* getelementptr inbounds ([0 x i8]* @__EH_FRAME_BEGIN__, i32 0, i32 0)) nounwind ; <i8*> [#uses=0]
+  br label %bb4
+
+bb4:                                              ; preds = %bb2, %bb3
+  store i1 true, i1* @completed.1298.b
+  ret void
+
+return:                                           ; preds = %entry
+  ret void
+}
+
+declare extern_weak i8* @__deregister_frame_info(i8*)
+
+define internal void @call___do_global_dtors_aux() nounwind {
+entry:
+  tail call void asm sideeffect "\09.section\09.fini", ""() nounwind
+  tail call void @__do_global_dtors_aux() nounwind
+  tail call void asm sideeffect ".text", ""() nounwind
+  ret void
+}
+
+define internal void @frame_dummy() nounwind {
+entry:
+  br i1 icmp ne (void (i8*, %struct.object*)* @__register_frame_info, void (i8*, %struct.object*)* null), label %bb, label %bb1
+
+bb:                                               ; preds = %entry
+  tail call void @__register_frame_info(i8* getelementptr inbounds ([0 x i8]* @__EH_FRAME_BEGIN__, i32 0, i32 0), %struct.object* @object.1314) nounwind
+  br label %bb1
+
+bb1:                                              ; preds = %entry, %bb
+  %0 = load i8** getelementptr inbounds ([0 x i8*]* @__JCR_LIST__, i64 0, i64 0), align 8 ; <i8*> [#uses=1]
+  %1 = icmp eq i8* %0, null                       ; <i1> [#uses=1]
+  br i1 %1, label %return, label %bb2
+
+bb2:                                              ; preds = %bb1
+  %asmtmp = tail call void (i8*)* (void (i8*)*)* asm "", "=r,0"(void (i8*)* @_Jv_RegisterClasses) nounwind ; <void (i8*)*> [#uses=2]
+  %2 = icmp eq void (i8*)* %asmtmp, null          ; <i1> [#uses=1]
+  br i1 %2, label %return, label %bb3
+
+bb3:                                              ; preds = %bb2
+  tail call void %asmtmp(i8* bitcast ([0 x i8*]* @__JCR_LIST__ to i8*)) nounwind
+  ret void
+
+return:                                           ; preds = %bb2, %bb1
+  ret void
+}
+
+declare extern_weak void @__register_frame_info(i8*, %struct.object*)
+
+declare extern_weak void @_Jv_RegisterClasses(i8*)
+
+define internal void @call_frame_dummy() nounwind {
+entry:
+  tail call void asm sideeffect "\09.section\09.init", ""() nounwind
+  tail call void @frame_dummy() nounwind
+  tail call void asm sideeffect ".text", ""() nounwind
+  ret void
+}