223 lines
7.1 KiB
LLVM
223 lines
7.1 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86_64
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; RUN: llc -mtriple=i386-unknown-unknown < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86
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; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39439.
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; RUN: llc -mtriple i386-windows-gnu -exception-model sjlj -verify-machineinstrs=0 < %s | FileCheck %s --check-prefix=SJLJ
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test1
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;; -----
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;; Checks ENDBR insertion in case of switch case statement.
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;; Also since the function is not internal, make sure that endbr32/64 was
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;; added at the beginning of the function.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i8 @test1(){
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; ALL-LABEL: test1
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; X86_64: endbr64
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; X86: endbr32
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; ALL: jmp{{q|l}} *
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; ALL: .LBB0_1:
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; X86_64-NEXT: endbr64
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; X86-NEXT: endbr32
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; ALL: .LBB0_2:
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; X86_64-NEXT: endbr64
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; X86-NEXT: endbr32
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entry:
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%0 = select i1 undef, i8* blockaddress(@test1, %bb), i8* blockaddress(@test1, %bb6) ; <i8*> [#uses=1]
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indirectbr i8* %0, [label %bb, label %bb6]
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bb: ; preds = %entry
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ret i8 1
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bb6: ; preds = %entry
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ret i8 2
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test2
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;; -----
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;; Checks NOTRACK insertion in case of switch case statement.
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;; Check that there is no ENDBR insertion in the following case statements.
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;; Also since the function is not internal, ENDBR instruction should be
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;; added to its first basic block.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i32 @test2(i32 %a) {
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; ALL-LABEL: test2
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; X86_64: endbr64
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; X86: endbr32
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; ALL: notrack jmp{{q|l}} *
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; X86_64-NOT: endbr64
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; X86-NOT: endbr32
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entry:
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%retval = alloca i32, align 4
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%a.addr = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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%0 = load i32, i32* %a.addr, align 4
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switch i32 %0, label %sw.default [
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i32 0, label %sw.bb
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i32 1, label %sw.bb1
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i32 2, label %sw.bb2
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i32 3, label %sw.bb3
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i32 4, label %sw.bb4
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]
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sw.bb: ; preds = %entry
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store i32 5, i32* %retval, align 4
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br label %return
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sw.bb1: ; preds = %entry
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store i32 7, i32* %retval, align 4
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br label %return
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sw.bb2: ; preds = %entry
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store i32 2, i32* %retval, align 4
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br label %return
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sw.bb3: ; preds = %entry
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store i32 32, i32* %retval, align 4
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br label %return
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sw.bb4: ; preds = %entry
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store i32 73, i32* %retval, align 4
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br label %return
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sw.default: ; preds = %entry
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store i32 0, i32* %retval, align 4
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br label %return
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return: ; preds = %sw.default, %sw.bb4, %sw.bb3, %sw.bb2, %sw.bb1, %sw.bb
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%1 = load i32, i32* %retval, align 4
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ret i32 %1
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test3
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;; -----
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;; Checks ENDBR insertion in case of indirect call instruction.
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;; The new instruction should be added to the called function (test6)
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;; although it is internal.
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;; Also since the function is not internal, ENDBR instruction should be
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;; added to its first basic block.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define void @test3() {
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; ALL-LABEL: test3
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; X86_64: endbr64
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; X86: endbr32
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; ALL: call{{q|l}} *
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entry:
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%f = alloca i32 (...)*, align 8
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store i32 (...)* bitcast (i32 (i32)* @test6 to i32 (...)*), i32 (...)** %f, align 8
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%0 = load i32 (...)*, i32 (...)** %f, align 8
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%call = call i32 (...) %0()
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ret void
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test4
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;; -----
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;; Checks ENDBR insertion in case of setjmp-like function calls.
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;; Also since the function is not internal, ENDBR instruction should be
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;; added to its first basic block.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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@buf = internal global [5 x i8*] zeroinitializer
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declare i8* @llvm.frameaddress(i32)
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declare i8* @llvm.stacksave()
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declare i32 @llvm.eh.sjlj.setjmp(i8*)
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define i32 @test4() {
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; ALL-LABEL: test4
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; X86_64: endbr64
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; X86: endbr32
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; ALL: .LBB3_3:
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; X86_64-NEXT: endbr64
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; X86-NEXT: endbr32
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%fp = tail call i8* @llvm.frameaddress(i32 0)
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store i8* %fp, i8** getelementptr inbounds ([5 x i8*], [5 x i8*]* @buf, i64 0, i64 0), align 16
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%sp = tail call i8* @llvm.stacksave()
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store i8* %sp, i8** getelementptr inbounds ([5 x i8*], [5 x i8*]* @buf, i64 0, i64 2), align 16
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%r = tail call i32 @llvm.eh.sjlj.setjmp(i8* bitcast ([5 x i8*]* @buf to i8*))
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ret i32 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test5
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;; -----
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;; Checks ENDBR insertion in case of internal function.
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;; Since the function is internal and its address was not taken,
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;; make sure that endbr32/64 was not added at the beginning of the
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;; function.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define internal i8 @test5(){
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; ALL-LABEL: test5
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; X86_64-NOT: endbr64
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; X86-NOT: endbr32
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ret i8 1
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test6
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;; -----
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;; Checks ENDBR insertion in case of function that its was address taken.
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;; Since the function's address was taken by test3() and despite being
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;; internal, check for added endbr32/64 at the beginning of the function.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define internal i32 @test6(i32 %a) {
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; ALL-LABEL: test6
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; X86_64: endbr64
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; X86: endbr32
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ret i32 1
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test7
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;; -----
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;; Checks ENDBR insertion in case of non-intrenal function.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i32 @test7() {
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; ALL-LABEL: test7
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; X86_64: endbr64
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; X86: endbr32
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ret i32 1
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Test8
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;; -----
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;; Checks that NO TRACK prefix is not added for indirect jumps to a jump-
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;; table that was created for SJLJ dispatch.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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declare void @_Z20function_that_throwsv()
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declare i32 @__gxx_personality_sj0(...)
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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define void @test8() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
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;SJLJ-LABEL: test8
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;SJLJ-NOT: ds
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entry:
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invoke void @_Z20function_that_throwsv()
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to label %try.cont unwind label %lpad
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lpad:
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%0 = landingpad { i8*, i32 }
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catch i8* null
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = tail call i8* @__cxa_begin_catch(i8* %1)
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tail call void @__cxa_end_catch()
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br label %try.cont
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try.cont:
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ret void
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 4, !"cf-protection-branch", i32 1}
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