6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-28 04:33:05 +00:00
Code Issues Projects Releases Wiki Activity

Mark the eh.typeid.for intrinsic as being 'const', which it is inside

Browse Source 
any given function.  As pointed out by John McCall, this is needed to
have redundant eh.typeid.for tests be eliminated in the presence of
cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139360 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2011-09-09 07:50:37 +00:00
parent d3be6ecafe
commit 73c8415d90
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/llvm/Intrinsics.td
View File

@ -309,7 +309,9 @@ def int_eh_selector : Intrinsic<[llvm_i32_ty],
[llvm_ptr_ty, llvm_ptr_ty, llvm_vararg_ty]>;
def int_eh_resume : Intrinsic<[], [llvm_ptr_ty, llvm_i32_ty], [Throws]>;
def int_eh_typeid_for : Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrReadMem]>;
// The result of eh.typeid.for depends on the enclosing function, but inside a
// given function it is 'const' and may be CSE'd etc.
def int_eh_typeid_for : Intrinsic<[llvm_i32_ty], [llvm_ptr_ty], [IntrNoMem]>;
def int_eh_return_i32 : Intrinsic<[], [llvm_i32_ty, llvm_ptr_ty]>;
def int_eh_return_i64 : Intrinsic<[], [llvm_i64_ty, llvm_ptr_ty]>;

3
test/Transforms/GVN/2011-09-07-TypeIdFor.ll
View File

@ -7,6 +7,8 @@
declare void @_Z4barv()
declare void @_Z7cleanupv()
declare i32 @llvm.eh.typeid.for(i8*) nounwind readonly
declare i8* @__cxa_begin_catch(i8*) nounwind
@ -50,6 +52,7 @@ ppad2: ; preds = %next
br label %return
next2: ; preds = %next
call void @_Z7cleanupv()
%typeid = tail call i32 @llvm.eh.typeid.for(i8* bitcast (%struct.__fundamental_type_info_pseudo* @_ZTIi to i8*))
; CHECK-NOT: call i32 @llvm.eh.typeid.for
%4 = icmp eq i32 %filter3.i, %typeid