| ; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=+ibt -x86-indirect-branch-tracking < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86_64 |
| ; RUN: llc -mtriple=i386-unknown-unknown -mattr=+ibt -x86-indirect-branch-tracking < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86 |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test1 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of indirect branch IR instruction. |
| ;; Also since the function is not internal, make sure that endbr32/64 was |
| ;; added at the beginning of the function. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| define i8 @test1(){ |
| ; ALL-LABEL: test1 |
| ; X86_64: endbr64 |
| ; X86: endbr32 |
| ; ALL: jmp{{q|l}} * |
| ; ALL: .LBB0_1: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| ; ALL: .LBB0_2: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| entry: |
| %0 = select i1 undef, i8* blockaddress(@test1, %bb), i8* blockaddress(@test1, %bb6) ; <i8*> [#uses=1] |
| indirectbr i8* %0, [label %bb, label %bb6] |
| |
| bb: ; preds = %entry |
| ret i8 1 |
| |
| bb6: ; preds = %entry |
| ret i8 2 |
| } |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test2 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of switch case statement. |
| ;; Also since the function is not internal, ENDBR instruction should be |
| ;; added to its first basic block. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| define i32 @test2(i32 %a) { |
| ; ALL-LABEL: test2 |
| ; X86_64: endbr64 |
| ; X86: endbr32 |
| ; ALL: jmp{{q|l}} * |
| ; ALL: .LBB1_2: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| ; ALL: .LBB1_7: |
| ; X86_64-NOT: endbr64 |
| ; X86-NOT: endbr32 |
| ; ALL: .LBB1_3: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| ; ALL: .LBB1_4: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| ; ALL: .LBB1_5: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| ; ALL: .LBB1_6: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| entry: |
| %retval = alloca i32, align 4 |
| %a.addr = alloca i32, align 4 |
| store i32 %a, i32* %a.addr, align 4 |
| %0 = load i32, i32* %a.addr, align 4 |
| switch i32 %0, label %sw.default [ |
| i32 0, label %sw.bb |
| i32 1, label %sw.bb1 |
| i32 2, label %sw.bb2 |
| i32 3, label %sw.bb3 |
| i32 4, label %sw.bb4 |
| ] |
| |
| sw.bb: ; preds = %entry |
| store i32 5, i32* %retval, align 4 |
| br label %return |
| |
| sw.bb1: ; preds = %entry |
| store i32 7, i32* %retval, align 4 |
| br label %return |
| |
| sw.bb2: ; preds = %entry |
| store i32 2, i32* %retval, align 4 |
| br label %return |
| |
| sw.bb3: ; preds = %entry |
| store i32 32, i32* %retval, align 4 |
| br label %return |
| |
| sw.bb4: ; preds = %entry |
| store i32 73, i32* %retval, align 4 |
| br label %return |
| |
| sw.default: ; preds = %entry |
| store i32 0, i32* %retval, align 4 |
| br label %return |
| |
| return: ; preds = %sw.default, %sw.bb4, %sw.bb3, %sw.bb2, %sw.bb1, %sw.bb |
| %1 = load i32, i32* %retval, align 4 |
| ret i32 %1 |
| } |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test3 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of indirect call instruction. |
| ;; The new instruction should be added to the called function (test6) |
| ;; although it is internal. |
| ;; Also since the function is not internal, ENDBR instruction should be |
| ;; added to its first basic block. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| define void @test3() { |
| ; ALL-LABEL: test3 |
| ; X86_64: endbr64 |
| ; X86: endbr32 |
| ; ALL: call{{q|l}} * |
| entry: |
| %f = alloca i32 (...)*, align 8 |
| store i32 (...)* bitcast (i32 (i32)* @test6 to i32 (...)*), i32 (...)** %f, align 8 |
| %0 = load i32 (...)*, i32 (...)** %f, align 8 |
| %call = call i32 (...) %0() |
| ret void |
| } |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test4 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of setjmp-like function calls. |
| ;; Also since the function is not internal, ENDBR instruction should be |
| ;; added to its first basic block. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| @buf = internal global [5 x i8*] zeroinitializer |
| declare i8* @llvm.frameaddress(i32) |
| declare i8* @llvm.stacksave() |
| declare i32 @llvm.eh.sjlj.setjmp(i8*) |
| |
| define i32 @test4() { |
| ; ALL-LABEL: test4 |
| ; X86_64: endbr64 |
| ; X86: endbr32 |
| ; ALL: .LBB3_3: |
| ; X86_64-NEXT: endbr64 |
| ; X86-NEXT: endbr32 |
| %fp = tail call i8* @llvm.frameaddress(i32 0) |
| store i8* %fp, i8** getelementptr inbounds ([5 x i8*], [5 x i8*]* @buf, i64 0, i64 0), align 16 |
| %sp = tail call i8* @llvm.stacksave() |
| store i8* %sp, i8** getelementptr inbounds ([5 x i8*], [5 x i8*]* @buf, i64 0, i64 2), align 16 |
| %r = tail call i32 @llvm.eh.sjlj.setjmp(i8* bitcast ([5 x i8*]* @buf to i8*)) |
| ret i32 %r |
| } |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test5 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of internal function. |
| ;; Since the function is internal and its address was not taken, |
| ;; make sure that endbr32/64 was not added at the beginning of the |
| ;; function. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| define internal i8 @test5(){ |
| ; ALL-LABEL: test5 |
| ; X86_64-NOT: endbr64 |
| ; X86-NOT: endbr32 |
| ret i8 1 |
| } |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test6 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of function that its was address taken. |
| ;; Since the function's address was taken by test3() and despite being |
| ;; internal, check for added endbr32/64 at the beginning of the function. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| define internal i32 @test6(i32 %a) { |
| ; ALL-LABEL: test6 |
| ; X86_64: endbr64 |
| ; X86: endbr32 |
| ret i32 1 |
| } |
| |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| ;; Test7 |
| ;; ----- |
| ;; Checks ENDBR insertion in case of non-intrenal function. |
| ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| |
| define i32 @test7() { |
| ; ALL-LABEL: test7 |
| ; X86_64: endbr64 |
| ; X86: endbr32 |
| ret i32 1 |
| } |