394 lines
12 KiB
LLVM
394 lines
12 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -S -winehprepare < %s | FileCheck %s
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declare i32 @__CxxFrameHandler3(...)
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declare i32 @__C_specific_handler(...)
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declare void @ProcessCLRException(...)
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declare void @f()
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declare void @llvm.foo(i32) nounwind
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declare void @llvm.bar() nounwind
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declare i32 @llvm.qux() nounwind
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declare i1 @llvm.baz() nounwind
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define void @test1() personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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; %x def colors: {entry} subset of use colors; must spill
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%x = call i32 @llvm.qux()
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invoke void @f()
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to label %noreturn unwind label %catch.switch
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catch.switch:
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%cs = catchswitch within none [label %catch] unwind to caller
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catch:
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%cp = catchpad within %cs []
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br label %noreturn
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noreturn:
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; %x use colors: {entry, cleanup}
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call void @llvm.foo(i32 %x)
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unreachable
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}
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; Need two copies of the call to @h, one under entry and one under catch.
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; Currently we generate a load for each, though we shouldn't need one
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; for the use in entry's copy.
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; CHECK-LABEL: define void @test1(
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; CHECK: entry:
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; CHECK: %x = call i32 @llvm.qux()
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; CHECK: invoke void @f()
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; CHECK: to label %[[EntryCopy:[^ ]+]] unwind label %catch
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; CHECK: catch.switch:
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; CHECK: %cs = catchswitch within none [label %catch] unwind to caller
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; CHECK: catch:
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; CHECK: catchpad within %cs []
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; CHECK-NEXT: call void @llvm.foo(i32 %x)
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; CHECK: [[EntryCopy]]:
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; CHECK: call void @llvm.foo(i32 %x)
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define void @test2() personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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invoke void @f()
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to label %exit unwind label %cleanup
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cleanup:
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cleanuppad within none []
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br label %exit
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exit:
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call void @llvm.bar()
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ret void
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}
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; Need two copies of %exit's call to @f -- the subsequent ret is only
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; valid when coming from %entry, but on the path from %cleanup, this
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; might be a valid call to @f which might dynamically not return.
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; CHECK-LABEL: define void @test2(
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; CHECK: entry:
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; CHECK: invoke void @f()
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; CHECK: to label %[[exit:[^ ]+]] unwind label %cleanup
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; CHECK: cleanup:
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; CHECK: cleanuppad within none []
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; CHECK: call void @llvm.bar()
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; CHECK-NEXT: unreachable
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; CHECK: [[exit]]:
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; CHECK: call void @llvm.bar()
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; CHECK-NEXT: ret void
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define void @test3() personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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invoke void @f()
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to label %invoke.cont unwind label %catch.switch
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invoke.cont:
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invoke void @f()
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to label %exit unwind label %cleanup
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catch.switch:
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%cs = catchswitch within none [label %catch] unwind to caller
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catch:
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catchpad within %cs []
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br label %shared
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cleanup:
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cleanuppad within none []
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br label %shared
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shared:
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call void @llvm.bar()
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br label %exit
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exit:
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ret void
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}
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; Need two copies of %shared's call to @f (similar to @test2 but
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; the two regions here are siblings, not parent-child).
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; CHECK-LABEL: define void @test3(
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; CHECK: invoke void @f()
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; CHECK: invoke void @f()
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; CHECK: to label %[[exit:[^ ]+]] unwind
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; CHECK: catch:
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; CHECK: catchpad within %cs []
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; CHECK-NEXT: call void @llvm.bar()
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; CHECK-NEXT: unreachable
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; CHECK: cleanup:
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; CHECK: cleanuppad within none []
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; CHECK: call void @llvm.bar()
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; CHECK-NEXT: unreachable
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; CHECK: [[exit]]:
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; CHECK: ret void
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define void @test4() personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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invoke void @f()
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to label %shared unwind label %catch.switch
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catch.switch:
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%cs = catchswitch within none [label %catch] unwind to caller
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catch:
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catchpad within %cs []
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br label %shared
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shared:
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%x = call i32 @llvm.qux()
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%i = call i32 @llvm.qux()
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%zero.trip = icmp eq i32 %i, 0
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br i1 %zero.trip, label %exit, label %loop
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loop:
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%i.loop = phi i32 [ %i, %shared ], [ %i.dec, %loop.tail ]
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%b = call i1 @llvm.baz()
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br i1 %b, label %left, label %right
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left:
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%y = call i32 @llvm.qux()
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br label %loop.tail
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right:
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call void @llvm.foo(i32 %x)
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br label %loop.tail
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loop.tail:
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%i.dec = sub i32 %i.loop, 1
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%done = icmp eq i32 %i.dec, 0
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br i1 %done, label %exit, label %loop
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exit:
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call void @llvm.foo(i32 %x)
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unreachable
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}
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; Make sure we can clone regions that have internal control
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; flow and SSA values. Here we need two copies of everything
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; from %shared to %exit.
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; CHECK-LABEL: define void @test4(
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; CHECK: entry:
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; CHECK: to label %[[shared_E:[^ ]+]] unwind label %catch.switch
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; CHECK: catch:
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; CHECK: catchpad within %cs []
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; CHECK: [[x_C:%[^ ]+]] = call i32 @llvm.qux()
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; CHECK: [[i_C:%[^ ]+]] = call i32 @llvm.qux()
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; CHECK: [[zt_C:%[^ ]+]] = icmp eq i32 [[i_C]], 0
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; CHECK: br i1 [[zt_C]], label %[[exit_C:[^ ]+]], label %[[loop_C:[^ ]+]]
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; CHECK: [[shared_E]]:
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; CHECK: [[x_E:%[^ ]+]] = call i32 @llvm.qux()
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; CHECK: [[i_E:%[^ ]+]] = call i32 @llvm.qux()
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; CHECK: [[zt_E:%[^ ]+]] = icmp eq i32 [[i_E]], 0
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; CHECK: br i1 [[zt_E]], label %[[exit_E:[^ ]+]], label %[[loop_E:[^ ]+]]
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; CHECK: [[loop_C]]:
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; CHECK: [[iloop_C:%[^ ]+]] = phi i32 [ [[i_C]], %catch ], [ [[idec_C:%[^ ]+]], %[[looptail_C:[^ ]+]] ]
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; CHECK: [[b_C:%[^ ]+]] = call i1 @llvm.baz()
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; CHECK: br i1 [[b_C]], label %[[left_C:[^ ]+]], label %[[right_C:[^ ]+]]
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; CHECK: [[loop_E]]:
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; CHECK: [[iloop_E:%[^ ]+]] = phi i32 [ [[i_E]], %[[shared_E]] ], [ [[idec_E:%[^ ]+]], %[[looptail_E:[^ ]+]] ]
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; CHECK: [[b_E:%[^ ]+]] = call i1 @llvm.baz()
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; CHECK: br i1 [[b_E]], label %[[left_E:[^ ]+]], label %[[right_E:[^ ]+]]
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; CHECK: [[left_C]]:
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; CHECK: [[y_C:%[^ ]+]] = call i32 @llvm.qux()
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; CHECK: br label %[[looptail_C]]
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; CHECK: [[left_E]]:
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; CHECK: [[y_E:%[^ ]+]] = call i32 @llvm.qux()
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; CHECK: br label %[[looptail_E]]
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; CHECK: [[right_C]]:
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; CHECK: call void @llvm.foo(i32 [[x_C]])
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; CHECK: br label %[[looptail_C]]
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; CHECK: [[right_E]]:
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; CHECK: call void @llvm.foo(i32 [[x_E]])
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; CHECK: br label %[[looptail_E]]
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; CHECK: [[looptail_C]]:
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; CHECK: [[idec_C]] = sub i32 [[iloop_C]], 1
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; CHECK: [[done_C:%[^ ]+]] = icmp eq i32 [[idec_C]], 0
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; CHECK: br i1 [[done_C]], label %[[exit_C]], label %[[loop_C]]
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; CHECK: [[looptail_E]]:
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; CHECK: [[idec_E]] = sub i32 [[iloop_E]], 1
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; CHECK: [[done_E:%[^ ]+]] = icmp eq i32 [[idec_E]], 0
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; CHECK: br i1 [[done_E]], label %[[exit_E]], label %[[loop_E]]
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; CHECK: [[exit_C]]:
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; CHECK: call void @llvm.foo(i32 [[x_C]])
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; CHECK: unreachable
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; CHECK: [[exit_E]]:
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; CHECK: call void @llvm.foo(i32 [[x_E]])
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; CHECK: unreachable
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define void @test5() personality i32 (...)* @__C_specific_handler {
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entry:
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invoke void @f()
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to label %exit unwind label %outer
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outer:
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%o = cleanuppad within none []
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%x = call i32 @llvm.qux()
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invoke void @f() [ "funclet"(token %o) ]
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to label %outer.ret unwind label %catch.switch
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catch.switch:
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%cs = catchswitch within %o [label %inner] unwind to caller
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inner:
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%i = catchpad within %cs []
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catchret from %i to label %outer.post-inner
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outer.post-inner:
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call void @llvm.foo(i32 %x)
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br label %outer.ret
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outer.ret:
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cleanupret from %o unwind to caller
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exit:
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ret void
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}
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; Simple nested case (catch-inside-cleanup). Nothing needs
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; to be cloned. The def and use of %x are both in %outer
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; and so don't need to be spilled.
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; CHECK-LABEL: define void @test5(
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; CHECK: outer:
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; CHECK: %x = call i32 @llvm.qux()
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; CHECK-NEXT: invoke void @f()
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; CHECK-NEXT: to label %outer.ret unwind label %catch.switch
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; CHECK: inner:
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; CHECK-NEXT: %i = catchpad within %cs []
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; CHECK-NEXT: catchret from %i to label %outer.post-inner
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; CHECK: outer.post-inner:
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; CHECK-NEXT: call void @llvm.foo(i32 %x)
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; CHECK-NEXT: br label %outer.ret
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define void @test10() personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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invoke void @f()
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to label %unreachable unwind label %inner
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inner:
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%cleanup = cleanuppad within none []
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; make sure we don't overlook this cleanupret and try to process
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; successor %outer as a child of inner.
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cleanupret from %cleanup unwind label %outer
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outer:
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%cs = catchswitch within none [label %catch.body] unwind to caller
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catch.body:
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%catch = catchpad within %cs []
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catchret from %catch to label %exit
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exit:
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ret void
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unreachable:
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unreachable
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}
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; CHECK-LABEL: define void @test10(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: invoke
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; CHECK-NEXT: to label %unreachable unwind label %inner
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; CHECK: inner:
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; CHECK-NEXT: %cleanup = cleanuppad within none []
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; CHECK-NEXT: cleanupret from %cleanup unwind label %outer
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; CHECK: outer:
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; CHECK-NEXT: %cs = catchswitch within none [label %catch.body] unwind to caller
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; CHECK: catch.body:
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; CHECK-NEXT: %catch = catchpad within %cs []
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; CHECK-NEXT: catchret from %catch to label %exit
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; CHECK: exit:
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; CHECK-NEXT: ret void
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define void @test11() personality i32 (...)* @__C_specific_handler {
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entry:
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invoke void @f()
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to label %exit unwind label %cleanup.outer
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cleanup.outer:
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%outer = cleanuppad within none []
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invoke void @f() [ "funclet"(token %outer) ]
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to label %outer.cont unwind label %cleanup.inner
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outer.cont:
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br label %merge
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cleanup.inner:
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%inner = cleanuppad within %outer []
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br label %merge
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merge:
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call void @llvm.bar()
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unreachable
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exit:
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ret void
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}
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; merge.end will get cloned for outer and inner, but is implausible
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; from inner, so the call @f() in inner's copy of merge should be
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; rewritten to call @f()
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; CHECK-LABEL: define void @test11()
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; CHECK: %inner = cleanuppad within %outer []
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; CHECK-NEXT: call void @llvm.bar()
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; CHECK-NEXT: unreachable
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define void @test12() personality i32 (...)* @__CxxFrameHandler3 !dbg !5 {
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entry:
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invoke void @f()
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to label %cont unwind label %left, !dbg !8
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cont:
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invoke void @f()
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to label %exit unwind label %right
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left:
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cleanuppad within none []
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br label %join
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right:
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cleanuppad within none []
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br label %join
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join:
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; This call will get cloned; make sure we can handle cloning
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; instructions with debug metadata attached.
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call void @llvm.bar(), !dbg !9
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unreachable
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exit:
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ret void
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}
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; CHECK-LABEL: define void @test13()
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; CHECK: ret void
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define void @test13() personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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ret void
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unreachable:
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cleanuppad within none []
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unreachable
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}
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define void @test14() personality void (...)* @ProcessCLRException {
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entry:
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invoke void @f()
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to label %cont unwind label %cleanup
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cont:
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invoke void @f()
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to label %exit unwind label %switch.outer
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cleanup:
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%cleanpad = cleanuppad within none []
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invoke void @f() [ "funclet" (token %cleanpad) ]
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to label %cleanret unwind label %switch.inner
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switch.inner:
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%cs.inner = catchswitch within %cleanpad [label %pad.inner] unwind to caller
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pad.inner:
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%cp.inner = catchpad within %cs.inner [i32 1]
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catchret from %cp.inner to label %join
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cleanret:
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cleanupret from %cleanpad unwind to caller
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switch.outer:
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%cs.outer = catchswitch within none [label %pad.outer] unwind to caller
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pad.outer:
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%cp.outer = catchpad within %cs.outer [i32 2]
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catchret from %cp.outer to label %join
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join:
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%phi = phi i32 [ 1, %pad.inner ], [ 2, %pad.outer ]
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call void @llvm.foo(i32 %phi)
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unreachable
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exit:
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ret void
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}
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; Both catchrets target %join, but the catchret from %cp.inner
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; returns to %cleanpad and the catchret from %cp.outer returns to the
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; main function, so %join needs to get cloned and one of the cleanuprets
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; needs to be updated to target the clone
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; CHECK-LABEL: define void @test14()
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; CHECK: catchret from %cp.inner to label %[[Clone1:.+]]
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; CHECK: catchret from %cp.outer to label %[[Clone2:.+]]
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; CHECK: [[Clone1]]:
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; CHECK-NEXT: call void @llvm.foo(i32 1)
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; CHECK-NEXT: unreachable
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; CHECK: [[Clone2]]:
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; CHECK-NEXT: call void @llvm.foo(i32 2)
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; CHECK-NEXT: unreachable
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;; Debug info (from test12)
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; Make sure the DISubprogram doesn't get cloned
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; CHECK-LABEL: !llvm.module.flags
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; CHECK-NOT: !DISubprogram
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; CHECK: !{{[0-9]+}} = distinct !DISubprogram(name: "test12"
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; CHECK-NOT: !DISubprogram
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!llvm.module.flags = !{!0}
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!llvm.dbg.cu = !{!1}
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!0 = !{i32 2, !"Debug Info Version", i32 3}
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!1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "compiler", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !3)
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!2 = !DIFile(filename: "test.cpp", directory: ".")
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!3 = !{}
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!5 = distinct !DISubprogram(name: "test12", scope: !2, file: !2, type: !6, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !1, retainedNodes: !3)
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!6 = !DISubroutineType(types: !7)
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!7 = !{null}
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!8 = !DILocation(line: 1, scope: !5)
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!9 = !DILocation(line: 2, scope: !5)
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