mirror of
https://github.com/RPCS3/llvm-mirror.git
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45072b933e
Summary: Initially, these intrinsics seemed like part of a family of "frame" related intrinsics, but now I think that's more confusing than helpful. Initially, the LangRef specified that this would create a new kind of allocation that would be allocated at a fixed offset from the frame pointer (EBP/RBP). We ended up dropping that design, and leaving the stack frame layout alone. These intrinsics are really about sharing local stack allocations, not frame pointers. I intend to go further and add an `llvm.localaddress()` intrinsic that returns whatever register (EBP, ESI, ESP, RBX) is being used to address locals, which should not be confused with the frame pointer. Naming suggestions at this point are welcome, I'm happy to re-run sed. Reviewers: majnemer, nicholas Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D11011 llvm-svn: 241633
211 lines
8.2 KiB
LLVM
211 lines
8.2 KiB
LLVM
; RUN: llc < %s | FileCheck %s
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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; This test case is equivalent to:
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; void f() {
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; try {
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; try {
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; may_throw();
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; } catch (int &) {
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; may_throw();
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; }
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; may_throw();
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; } catch (double) {
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; }
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; }
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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%eh.CatchHandlerType = type { i32, i8* }
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$"\01??_R0N@8" = comdat any
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$"\01??_R0H@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0N@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".N\00" }, comdat
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@llvm.eh.handlertype.N.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0N@8" to i8*) }, section "llvm.metadata"
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
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@llvm.eh.handlertype.H.8 = private unnamed_addr constant %eh.CatchHandlerType { i32 8, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
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define internal i8* @"\01?f@@YAXXZ.catch"(i8*, i8*) #4 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%.i8 = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?f@@YAXXZ" to i8*), i8* %1, i32 0)
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%bc2 = bitcast i8* %.i8 to i32**
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%bc3 = bitcast i32** %bc2 to i8*
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %invoke.cont2 unwind label %lpad1
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invoke.cont2: ; preds = %entry
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ret i8* blockaddress(@"\01?f@@YAXXZ", %try.cont)
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lpad1: ; preds = %entry
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%lp4 = landingpad { i8*, i32 }
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cleanup
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catch %eh.CatchHandlerType* @llvm.eh.handlertype.N.0
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%recover = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.N.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch1")
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indirectbr i8* %recover, [label %invoke.cont2]
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}
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; CHECK-LABEL: "?f@@YAXXZ.catch":
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; No code should be generated for the indirectbr.
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; CHECK-NOT: jmpq *
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; CHECK: .seh_handlerdata
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; CHECK: .long ("$cppxdata$?f@@YAXXZ")@IMGREL
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define internal i8* @"\01?f@@YAXXZ.catch1"(i8*, i8*) #4 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%.i8 = call i8* @llvm.localrecover(i8* bitcast (void ()* @"\01?f@@YAXXZ" to i8*), i8* %1, i32 1)
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%2 = bitcast i8* %.i8 to double*
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%3 = bitcast double* %2 to i8*
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invoke void () @llvm.donothing()
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to label %done unwind label %lpad
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done:
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ret i8* blockaddress(@"\01?f@@YAXXZ", %try.cont8)
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lpad: ; preds = %entry
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%4 = landingpad { i8*, i32 }
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cleanup
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%recover = call i8* (...) @llvm.eh.actions()
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unreachable
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}
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; CHECK-LABEL: "?f@@YAXXZ.catch1":
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; No code should be generated for the indirectbr.
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; CHECK-NOT: jmpq *
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; CHECK: ".L?f@@YAXXZ.catch1$parent_frame_offset" = 16
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; CHECK: movq %rdx, 16(%rsp)
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; CHECK: .seh_handlerdata
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; CHECK: .long ("$cppxdata$?f@@YAXXZ")@IMGREL
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define void @"\01?f@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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%0 = alloca i32*, align 8
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%1 = alloca double, align 8
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call void (...) @llvm.localescape(i32** %0, double* %1)
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %invoke.cont unwind label %lpad2
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invoke.cont: ; preds = %entry
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br label %try.cont
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lpad2: ; preds = %entry
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%2 = landingpad { i8*, i32 }
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catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.8
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catch %eh.CatchHandlerType* @llvm.eh.handlertype.N.0
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%recover = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.8 to i8*), i32 0, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch", i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.N.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch1")
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indirectbr i8* %recover, [label %try.cont, label %try.cont8]
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try.cont: ; preds = %lpad2, %invoke.cont
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invoke void @"\01?may_throw@@YAXXZ"()
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to label %try.cont8 unwind label %lpad1
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lpad1:
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%3 = landingpad { i8*, i32 }
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catch %eh.CatchHandlerType* @llvm.eh.handlertype.N.0
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%recover2 = call i8* (...) @llvm.eh.actions(i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.N.0 to i8*), i32 1, i8* (i8*, i8*)* @"\01?f@@YAXXZ.catch1")
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indirectbr i8* %recover2, [label %try.cont8]
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try.cont8: ; preds = %lpad2, %try.cont
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ret void
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}
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; CHECK-LABEL: "?f@@YAXXZ":
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; No code should be generated for the indirectbr.
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; CHECK-NOT: jmpq *
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; CHECK: .seh_handlerdata
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; CHECK-NEXT: .long ("$cppxdata$?f@@YAXXZ")@IMGREL
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; CHECK-NEXT:"$cppxdata$?f@@YAXXZ":
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; CHECK-NEXT: .long 429065506
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; CHECK-NEXT: .long 4
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; CHECK-NEXT: .long ("$stateUnwindMap$?f@@YAXXZ")@IMGREL
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long ("$tryMap$?f@@YAXXZ")@IMGREL
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; CHECK-NEXT: .long 6
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; CHECK-NEXT: .long ("$ip2state$?f@@YAXXZ")@IMGREL
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; CHECK-NEXT: .long 32
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 1
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; CHECK-NEXT:"$stateUnwindMap$?f@@YAXXZ":
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; CHECK-NEXT: .long -1
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long -1
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; CHECK-NEXT: .long 0
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; CHECK-NEXT:"$tryMap$?f@@YAXXZ":
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long ("$handlerMap$0$?f@@YAXXZ")@IMGREL
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long 3
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long ("$handlerMap$1$?f@@YAXXZ")@IMGREL
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; CHECK-NEXT:"$handlerMap$0$?f@@YAXXZ":
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; CHECK-NEXT: .long 8
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; CHECK-NEXT: .long "??_R0H@8"@IMGREL
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; CHECK-NEXT: .long ".L?f@@YAXXZ$frame_escape_0"
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; CHECK-NEXT: .long "?f@@YAXXZ.catch"@IMGREL
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; CHECK-NEXT: .long ".L?f@@YAXXZ.catch$parent_frame_offset"
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; CHECK-NEXT:"$handlerMap$1$?f@@YAXXZ":
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long "??_R0N@8"@IMGREL
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; CHECK-NEXT: .long ".L?f@@YAXXZ$frame_escape_1"
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; CHECK-NEXT: .long "?f@@YAXXZ.catch1"@IMGREL
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; CHECK-NEXT: .long ".L?f@@YAXXZ.catch1$parent_frame_offset"
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; CHECK-NEXT:"$ip2state$?f@@YAXXZ":
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; CHECK-NEXT: .long .Lfunc_begin0@IMGREL
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long .Ltmp0@IMGREL
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long .Lfunc_begin1@IMGREL
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; CHECK-NEXT: .long 3
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; CHECK-NEXT: .long .Lfunc_begin2@IMGREL
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; CHECK-NEXT: .long -1
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; CHECK-NEXT: .long .Ltmp13@IMGREL
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long .Ltmp16@IMGREL
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; CHECK-NEXT: .long 0
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declare void @"\01?may_throw@@YAXXZ"() #1
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind readnone
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declare i32 @llvm.eh.typeid.for(i8*) #2
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; Function Attrs: nounwind
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declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #3
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; Function Attrs: nounwind
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declare void @llvm.eh.endcatch() #3
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; Function Attrs: nounwind
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declare i8* @llvm.eh.actions(...) #3
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; Function Attrs: nounwind
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declare void @llvm.localescape(...) #3
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; Function Attrs: nounwind readnone
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declare i8* @llvm.localrecover(i8*, i8*, i32) #2
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declare void @llvm.donothing()
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attributes #0 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" "wineh-parent"="?f@@YAXXZ" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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attributes #4 = { "wineh-parent"="?f@@YAXXZ" }
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