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|
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86_64
; RUN: llc -mtriple=x86_64-unknown-unknown-gnux32 < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86_64
; RUN: llc -mtriple=i386-unknown-unknown < %s | FileCheck %s --check-prefix=ALL --check-prefix=X86
; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39439.
; RUN: llc -mtriple i386-windows-gnu -exception-model sjlj -verify-machineinstrs=0 < %s | FileCheck %s --check-prefix=SJLJ
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test1
;; -----
;; Checks ENDBR insertion in case of switch case statement.
;; 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 NOTRACK insertion in case of switch case statement.
;; Check that there is no ENDBR insertion in the following case statements.
;; 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: notrack jmp{{q|l}} *
; X86_64-NOT: endbr64
; X86-NOT: 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
}
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Test8
;; -----
;; Checks that NO TRACK prefix is not added for indirect jumps to a jump-
;; table that was created for SJLJ dispatch.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
declare void @_Z20function_that_throwsv()
declare i32 @__gxx_personality_sj0(...)
declare i8* @__cxa_begin_catch(i8*)
declare void @__cxa_end_catch()
define void @test8() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
;SJLJ-LABEL: test8
;SJLJ-NOT: ds
entry:
invoke void @_Z20function_that_throwsv()
to label %try.cont unwind label %lpad
lpad:
%0 = landingpad { i8*, i32 }
catch i8* null
%1 = extractvalue { i8*, i32 } %0, 0
%2 = tail call i8* @__cxa_begin_catch(i8* %1)
tail call void @__cxa_end_catch()
br label %try.cont
try.cont:
ret void
}
!llvm.module.flags = !{!0}
!0 = !{i32 4, !"cf-protection-branch", i32 1}
|
