| ; ModuleID = 'extern_global2.c' |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| ;RUN: dsaopt %s -dsa-local -analyze |
| ;RUN: dsaopt %s -dsa-bu -analyze |
| ;RUN: dsaopt %s -dsa-td -analyze |
| |
| ; Global stays non-external until TD! |
| ; RUN: dsaopt %s -dsa-local -analyze -verify-flags "G+G-E" |
| ; RUN: dsaopt %s -dsa-bu -analyze -verify-flags "G+G-E" |
| ; RUN: dsaopt %s -dsa-bu -analyze -verify-flags "G:0-E" |
| ; RUN: dsaopt %s -dsa-td -analyze -verify-flags "G+G-E" |
| ; RUN: dsaopt %s -dsa-td -analyze -verify-flags "G:0+E" |
| @G = internal global i32* null ; <i32**> [#uses=2] |
| |
| ; This function is externally callable so we mark it's arguments |
| ; external when processed in TD. |
| ;RUN: dsaopt %s -dsa-local -analyze -verify-flags "C:a+I-E" |
| ;RUN: dsaopt %s -dsa-bu -analyze -verify-flags "C:a+I-E" |
| ;RUN: dsaopt %s -dsa-td -analyze -verify-flags "C:a-I+E" |
| define internal void @C(i32** %a) nounwind { |
| entry: |
| %a_addr = alloca i32** ; <i32***> [#uses=2] |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| store i32** %a, i32*** %a_addr |
| %0 = load i32** @G, align 8 ; <i32*> [#uses=1] |
| %1 = load i32*** %a_addr, align 8 ; <i32**> [#uses=1] |
| store i32* %0, i32** %1, align 8 |
| br label %return |
| |
| return: ; preds = %entry |
| ret void |
| } |
| |
| ; RUN: dsaopt %s -dsa-local -analyze -verify-flags "B:ptr:0-E" |
| ; RUN: dsaopt %s -dsa-local -analyze -verify-flags "B:a-E" |
| ; RUN: dsaopt %s -dsa-bu -analyze -verify-flags "B:ptr:0-E" |
| ; RUN: dsaopt %s -dsa-bu -analyze -verify-flags "B:a-E" |
| ; RUN: dsaopt %s -dsa-td -analyze -verify-flags "B:ptr:0+E" |
| ; RUN: dsaopt %s -dsa-td -analyze -verify-flags "B:a+E" |
| define internal void @B() nounwind { |
| entry: |
| %a = alloca i32 ; <i32*> [#uses=1] |
| %ptr = alloca i32* ; <i32**> [#uses=2] |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| store i32* %a, i32** %ptr, align 8 |
| call void @C(i32** %ptr) nounwind |
| br label %return |
| |
| return: ; preds = %entry |
| ret void |
| } |
| |
| define internal void @B2() nounwind { |
| entry: |
| %a = alloca i32* ; <i32**> [#uses=2] |
| %val = alloca i32 ; <i32*> [#uses=1] |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| %0 = load i32** @G, align 8 ; <i32*> [#uses=1] |
| store i32* %0, i32** %a, align 8 |
| %1 = load i32** %a, align 8 ; <i32*> [#uses=1] |
| %2 = load i32* %1, align 4 ; <i32> [#uses=1] |
| store i32 %2, i32* %val, align 4 |
| br label %return |
| |
| return: ; preds = %entry |
| ret void |
| } |
| |
| ; 'f' is passed to an external function, should always be external. |
| ;RUN: dsaopt %s -dsa-local -analyze -verify-flags "externalize:f+E" |
| ;RUN: dsaopt %s -dsa-bu -analyze -verify-flags "externalize:f+E" |
| ;RUN: dsaopt %s -dsa-td -analyze -verify-flags "externalize:f+E" |
| define internal void @externalize(void (i32**)* %f) nounwind { |
| entry: |
| %f_addr = alloca void (i32**)* ; <void (i32**)**> [#uses=2] |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| store void (i32**)* %f, void (i32**)** %f_addr |
| %0 = load void (i32**)** %f_addr, align 8 ; <void (i32**)*> [#uses=1] |
| call void @external(void (i32**)* %0) nounwind |
| br label %return |
| |
| return: ; preds = %entry |
| ret void |
| } |
| |
| declare void @external(void (i32**)*) |
| |
| ; 'f' shouldn't be external in local, nothing to cause that yet. |
| ; However in BU and TD f should point to something external, but not be |
| ; external itself. |
| ;RUN: dsaopt %s -dsa-local -analyze -verify-flags "A:f-E" |
| ;RUN: dsaopt %s -dsa-local -analyze -verify-flags "A:f:0-E" |
| ;RUN: dsaopt %s -dsa-bu -analyze -verify-flags "A:f-E" |
| ;RUN: dsaopt %s -dsa-bu -analyze -verify-flags "A:f:0+E" |
| ;RUN: dsaopt %s -dsa-td -analyze -verify-flags "A:f-E" |
| ;RUN: dsaopt %s -dsa-td -analyze -verify-flags "A:f:0+E" |
| define internal void @A() nounwind { |
| entry: |
| %f = alloca void (i32**)* ; <void (i32**)**> [#uses=2] |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| store void (i32**)* @C, void (i32**)** %f, align 8 |
| %0 = load void (i32**)** %f, align 8 ; <void (i32**)*> [#uses=1] |
| call void @externalize(void (i32**)* %0) nounwind |
| call void @B() nounwind |
| call void @B2() nounwind |
| br label %return |
| |
| return: ; preds = %entry |
| ret void |
| } |