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; RUN: opt < %s -simplifycfg -S | FileCheck %s
declare void @bar()
; This testcase checks to see if the simplifycfg pass is converting invoke
; instructions to call instructions if the handler just rethrows the exception.
define i32 @test1() personality i32 (...)* @__gxx_personality_v0 {
; CHECK-LABEL: @test1(
; CHECK-NEXT: call void @bar(), !prof ![[PROF:[0-9]+]]
; CHECK-NEXT: ret i32 0
invoke void @bar( )
to label %1 unwind label %Rethrow, !prof !0
ret i32 0
Rethrow:
%exn = landingpad {i8*, i32}
catch i8* null
resume { i8*, i32 } %exn
}
!0 = !{!"branch_weights", i32 369, i32 2}
define i32 @test2() personality i32 (...)* @__gxx_personality_v0 {
; CHECK-LABEL: @test2(
; CHECK-NEXT: call void @bar() [ "foo"(i32 100) ]
; CHECK-NEXT: ret i32 0
invoke void @bar( ) [ "foo"(i32 100) ]
to label %1 unwind label %Rethrow
ret i32 0
Rethrow:
%exn = landingpad {i8*, i32}
catch i8* null
resume { i8*, i32 } %exn
}
declare i64 @dummy1()
declare i64 @dummy2()
; This testcase checks to see if simplifycfg pass can convert two invoke
; instructions to call instructions if they share a common trivial unwind
; block.
define i64 @test3(i1 %cond) personality i32 (...)* @__gxx_personality_v0 {
entry:
; CHECK-LABEL: @test3(
; CHECK: %call1 = call i64 @dummy1()
; CHECK: %call2 = call i64 @dummy2()
; CHECK-NOT: resume { i8*, i32 } %lp
br i1 %cond, label %br1, label %br2
br1:
%call1 = invoke i64 @dummy1()
to label %invoke.cont unwind label %lpad1
br2:
%call2 = invoke i64 @dummy2()
to label %invoke.cont unwind label %lpad2
invoke.cont:
%c = phi i64 [%call1, %br1], [%call2, %br2]
ret i64 %c
lpad1:
%0 = landingpad { i8*, i32 }
cleanup
br label %rethrow
rethrow:
%lp = phi { i8*, i32 } [%0, %lpad1], [%1, %lpad2]
resume { i8*, i32 } %lp
lpad2:
%1 = landingpad { i8*, i32 }
cleanup
br label %rethrow
}
declare i32 @__gxx_personality_v0(...)
; CHECK: ![[PROF]] = !{!"branch_weights", i32 371}
|
