| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| target triple = "x86_64-pc-windows-msvc" |
| |
| define i1 @test1(i8* %p) personality i32 (...)* @__CxxFrameHandler3 { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[A:%.*]] = getelementptr i8, i8* [[P:%.*]], i64 1 |
| ; CHECK-NEXT: invoke void @may_throw() |
| ; CHECK-NEXT: to label [[INVOKE_CONT:%.*]] unwind label [[CATCH_DISPATCH:%.*]] |
| ; CHECK: invoke.cont: |
| ; CHECK-NEXT: [[B:%.*]] = getelementptr i8, i8* [[P]], i64 2 |
| ; CHECK-NEXT: invoke void @may_throw() |
| ; CHECK-NEXT: to label [[EXIT:%.*]] unwind label [[CATCH_DISPATCH]] |
| ; CHECK: catch.dispatch: |
| ; CHECK-NEXT: [[C:%.*]] = phi i8* [ [[B]], [[INVOKE_CONT]] ], [ [[A]], [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: [[TMP1:%.*]] = catchswitch within none [label %catch] unwind to caller |
| ; CHECK: catch: |
| ; CHECK-NEXT: [[TMP2:%.*]] = catchpad within [[TMP1]] [i8* null, i32 64, i8* null] |
| ; CHECK-NEXT: catchret from [[TMP2]] to label [[EXIT]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: [[D:%.*]] = phi i8* [ [[A]], [[INVOKE_CONT]] ], [ [[C]], [[CATCH:%.*]] ] |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[D]], [[A]] |
| ; CHECK-NEXT: ret i1 [[CMP]] |
| ; |
| entry: |
| %a = getelementptr i8, i8* %p, i64 1 |
| invoke void @may_throw() |
| to label %invoke.cont unwind label %catch.dispatch |
| |
| invoke.cont: |
| %b = getelementptr inbounds i8, i8* %a, i64 1 |
| invoke void @may_throw() |
| to label %exit unwind label %catch.dispatch |
| |
| catch.dispatch: |
| %c = phi i8* [ %b, %invoke.cont ], [ %a, %entry ] |
| %tmp1 = catchswitch within none [label %catch] unwind to caller |
| |
| catch: |
| %tmp2 = catchpad within %tmp1 [i8* null, i32 64, i8* null] |
| catchret from %tmp2 to label %exit |
| |
| exit: |
| %d = phi i8* [ %a, %invoke.cont ], [ %c, %catch ] |
| %cmp = icmp eq i8* %d, %a |
| ret i1 %cmp |
| } |
| |
| declare void @may_throw() |
| |
| declare i32 @__CxxFrameHandler3(...) |