mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-04 16:01:46 +00:00
cc714e2142
The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239940 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
2.0 KiB
LLVM
73 lines
2.0 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S < %s | FileCheck %s
|
|
|
|
; Notionally based on this C++ source:
|
|
; int liveout_catch(int p) {
|
|
; int val = p + 1;
|
|
; try {
|
|
; might_throw();
|
|
; } catch (int) {
|
|
; val++;
|
|
; }
|
|
; return val;
|
|
; }
|
|
|
|
declare void @llvm.eh.begincatch(i8*, i8*)
|
|
declare void @llvm.eh.endcatch()
|
|
declare void @might_throw()
|
|
declare i32 @__CxxFrameHandler3(...)
|
|
declare i32 @llvm.eh.typeid.for(i8*)
|
|
|
|
@typeinfo.int = external global i32
|
|
|
|
define i32 @liveout_catch(i32 %p) personality i32 (...)* @__CxxFrameHandler3 {
|
|
entry:
|
|
%val.entry = add i32 %p, 1
|
|
invoke void @might_throw()
|
|
to label %ret unwind label %lpad
|
|
|
|
lpad:
|
|
%ehvals = landingpad { i8*, i32 }
|
|
cleanup
|
|
catch i32* @typeinfo.int
|
|
%ehptr = extractvalue { i8*, i32 } %ehvals, 0
|
|
%sel = extractvalue { i8*, i32 } %ehvals, 1
|
|
%int_sel = call i32 @llvm.eh.typeid.for(i8* bitcast (i32* @typeinfo.int to i8*))
|
|
%match = icmp eq i32 %sel, %int_sel
|
|
br i1 %match, label %catchit, label %resume
|
|
|
|
catchit:
|
|
call void @llvm.eh.begincatch(i8* %ehptr, i8* null)
|
|
%val.lpad = add i32 %val.entry, 1
|
|
call void @llvm.eh.endcatch()
|
|
br label %ret
|
|
|
|
ret:
|
|
%rv = phi i32 [%val.entry, %entry], [%val.lpad, %catchit]
|
|
ret i32 %rv
|
|
|
|
resume:
|
|
resume {i8*, i32} %ehvals
|
|
}
|
|
|
|
; CHECK-LABEL: define i32 @liveout_catch(i32 %p)
|
|
; CHECK: %val.entry = add i32 %p, 1
|
|
; CHECK-NEXT: store i32 %val.entry, i32* %val.entry.reg2mem
|
|
; CHECK: invoke void @might_throw()
|
|
;
|
|
; CHECK: landingpad
|
|
; CHECK: indirectbr i8* {{.*}}, [label %catchit.split]
|
|
;
|
|
; CHECK: catchit.split:
|
|
; CHECK: load i32, i32* %val.lpad.reg2mem
|
|
; CHECK: br label %ret
|
|
;
|
|
; CHECK: ret:
|
|
; CHECK: %rv = phi i32 [ {{.*}}, %entry ], [ {{.*}}, %catchit.split ]
|
|
; CHECK: ret i32
|
|
|
|
; CHECK-LABEL: define internal i8* @liveout_catch.catch(i8*, i8*)
|
|
; CHECK: %[[val:[^ ]*]] = load i32, i32*
|
|
; CHECK-NEXT: %[[val_lpad:[^ ]*]] = add i32 %[[val]], 1
|
|
; CHECK-NEXT: store i32 %[[val_lpad]], i32*
|
|
; CHECK: ret i8* blockaddress(@liveout_catch, %catchit.split)
|