forked from OSchip/llvm-project
222 lines
7.0 KiB
LLVM
222 lines
7.0 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-unknown < %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
|
|
; RUN: llc -mtriple i386-windows-gnu -exception-model sjlj < %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}
|