You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
4.0 KiB
126 lines
4.0 KiB
; RUN: llc %s -o - | FileCheck %s
|
|
; RUN: llc -mtriple=armv7-linux -exception-model sjlj %s -o - | FileCheck %s -check-prefix CHECK-LINUX
|
|
; RUN: llc -mtriple=thumbv7-win32 -exception-model sjlj %s -o - | FileCheck %s -check-prefix CHECK-WIN32
|
|
target triple = "armv7-apple-ios"
|
|
|
|
declare i32 @llvm.eh.sjlj.setjmp(i8*)
|
|
declare void @llvm.eh.sjlj.longjmp(i8*)
|
|
@g = external global i32
|
|
|
|
declare void @may_throw()
|
|
declare i32 @__gxx_personality_sj0(...)
|
|
declare i8* @__cxa_begin_catch(i8*)
|
|
declare void @__cxa_end_catch()
|
|
declare i32 @llvm.eh.typeid.for(i8*)
|
|
declare i8* @llvm.frameaddress(i32)
|
|
declare i8* @llvm.stacksave()
|
|
@_ZTIPKc = external constant i8*
|
|
|
|
; CHECK-LABEL: foobar
|
|
;
|
|
; setjmp sequence:
|
|
; CHECK: add [[PCREG:r[0-9]+]], pc, #8
|
|
; CHECK-NEXT: str [[PCREG]], {{\[}}[[BUFREG:r[0-9]+]], #4]
|
|
; CHECK-NEXT: mov r0, #0
|
|
; CHECK-NEXT: add pc, pc, #0
|
|
; CHECK-NEXT: mov r0, #1
|
|
;
|
|
; longjmp sequence:
|
|
; CHECK: ldr sp, [{{\s*}}[[BUFREG:r[0-9]+]], #8]
|
|
; CHECK-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
|
|
; CHECK-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
|
|
; CHECK-NEXT: bx [[DESTREG]]
|
|
|
|
; CHECK-LINUX: ldr sp, [{{\s*}}[[BUFREG:r[0-9]+]], #8]
|
|
; CHECK-LINUX-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
|
|
; CHECK-LINUX-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
|
|
; CHECK-LINUX-NEXT: ldr r11, {{\[}}[[BUFREG]]{{\]}}
|
|
; CHECK-LINUX-NEXT: bx [[DESTREG]]
|
|
|
|
; CHECK-WIN32: ldr.w r11, [{{\s*}}[[BUFREG:r[0-9]+]]]
|
|
; CHECK-WIN32-NEXT: ldr.w sp, {{\[}}[[BUFREG]], #8]
|
|
; CHECK-WIN32-NEXT: ldr.w pc, {{\[}}[[BUFREG]], #4]
|
|
define void @foobar() {
|
|
entry:
|
|
%buf = alloca [5 x i8*], align 4
|
|
%arraydecay = getelementptr inbounds [5 x i8*], [5 x i8*]* %buf, i32 0, i32 0
|
|
%bufptr = bitcast i8** %arraydecay to i8*
|
|
; Note: This is simplified, in reality you have to store the framepointer +
|
|
; stackpointer in the buffer as well for this to be legal!
|
|
%setjmpres = call i32 @llvm.eh.sjlj.setjmp(i8* %bufptr)
|
|
%tobool = icmp ne i32 %setjmpres, 0
|
|
br i1 %tobool, label %if.then, label %if.else
|
|
|
|
if.then:
|
|
store volatile i32 1, i32* @g, align 4
|
|
br label %if.end
|
|
|
|
if.else:
|
|
store volatile i32 0, i32* @g, align 4
|
|
call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
|
|
unreachable
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: combine_sjlj_eh_and_setjmp_longjmp
|
|
; Check that we can mix sjlj exception handling with __builtin_setjmp
|
|
; and __builtin_longjmp.
|
|
;
|
|
; setjmp sequence:
|
|
; CHECK: add [[PCREG:r[0-9]+]], pc, #8
|
|
; CHECK-NEXT: str [[PCREG]], {{\[}}[[BUFREG:r[0-9]+]], #4]
|
|
; CHECK-NEXT: mov r0, #0
|
|
; CHECK-NEXT: add pc, pc, #0
|
|
; CHECK-NEXT: mov r0, #1
|
|
;
|
|
; longjmp sequence:
|
|
; CHECK: ldr sp, [{{\s*}}[[BUFREG:r[0-9]+]], #8]
|
|
; CHECK-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
|
|
; CHECK-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
|
|
; CHECK-NEXT: bx [[DESTREG]]
|
|
define void @combine_sjlj_eh_and_setjmp_longjmp() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
|
|
entry:
|
|
%buf = alloca [5 x i8*], align 4
|
|
invoke void @may_throw() to label %try.cont unwind label %lpad
|
|
|
|
lpad:
|
|
%0 = landingpad { i8*, i32 } catch i8* bitcast (i8** @_ZTIPKc to i8*)
|
|
%1 = extractvalue { i8*, i32 } %0, 1
|
|
%2 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIPKc to i8*)) #3
|
|
%matches = icmp eq i32 %1, %2
|
|
br i1 %matches, label %catch, label %eh.resume
|
|
|
|
catch:
|
|
%3 = extractvalue { i8*, i32 } %0, 0
|
|
%4 = tail call i8* @__cxa_begin_catch(i8* %3) #3
|
|
store volatile i32 0, i32* @g, align 4
|
|
%5 = bitcast [5 x i8*]* %buf to i8*
|
|
%arraydecay = getelementptr inbounds [5 x i8*], [5 x i8*]* %buf, i64 0, i64 0
|
|
%6 = tail call i8* @llvm.frameaddress(i32 0)
|
|
store i8* %6, i8** %arraydecay, align 16
|
|
%7 = tail call i8* @llvm.stacksave()
|
|
%8 = getelementptr [5 x i8*], [5 x i8*]* %buf, i64 0, i64 2
|
|
store i8* %7, i8** %8, align 16
|
|
%9 = call i32 @llvm.eh.sjlj.setjmp(i8* %5)
|
|
%tobool = icmp eq i32 %9, 0
|
|
br i1 %tobool, label %if.else, label %if.then
|
|
|
|
if.then:
|
|
store volatile i32 2, i32* @g, align 4
|
|
call void @__cxa_end_catch() #3
|
|
br label %try.cont
|
|
|
|
if.else:
|
|
store volatile i32 1, i32* @g, align 4
|
|
call void @llvm.eh.sjlj.longjmp(i8* %5)
|
|
unreachable
|
|
|
|
eh.resume:
|
|
resume { i8*, i32 } %0
|
|
|
|
try.cont:
|
|
ret void
|
|
}
|