forked from OSchip/llvm-project
101 lines
3.1 KiB
LLVM
101 lines
3.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -sink-common-insts -S < %s | FileCheck %s
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; Test that we tail merge resume blocks and phi operands properly.
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declare void @maybe_throws()
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declare void @foo()
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declare void @bar()
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declare void @baz()
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declare void @qux()
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declare void @quux()
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declare void @quuz()
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declare void @common()
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define void @merge_simple(i1 %cond) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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; CHECK-LABEL: @merge_simple(
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; CHECK-NEXT: invoke void @maybe_throws()
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; CHECK-NEXT: to label [[INVOKE_CONT:%.*]] unwind label [[LPAD:%.*]]
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; CHECK: invoke.cont:
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; CHECK-NEXT: invoke void @maybe_throws()
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; CHECK-NEXT: to label [[INVOKE_CONT2:%.*]] unwind label [[LPAD2:%.*]]
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; CHECK: invoke.cont2:
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; CHECK-NEXT: invoke void @maybe_throws()
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; CHECK-NEXT: to label [[INVOKE_CONT3:%.*]] unwind label [[LPAD3:%.*]]
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; CHECK: invoke.cont3:
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; CHECK-NEXT: ret void
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; CHECK: lpad:
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; CHECK-NEXT: [[LP:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[RESUME0:%.*]], label [[RESUME1:%.*]]
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; CHECK: lpad2:
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; CHECK-NEXT: [[LP2:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call void @bar()
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; CHECK-NEXT: br label [[RESUME2:%.*]]
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; CHECK: lpad3:
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; CHECK-NEXT: [[LP3:%.*]] = landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call void @baz()
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; CHECK-NEXT: br label [[RESUME2]]
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; CHECK: common.resume:
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; CHECK-NEXT: [[COMMON_RESUME_OP:%.*]] = phi { i8*, i32 } [ [[LP]], [[RESUME0]] ], [ [[LP]], [[RESUME1]] ], [ [[SEMICOMMON_LP:%.*]], [[RESUME2]] ]
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; CHECK-NEXT: call void @common()
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; CHECK-NEXT: resume { i8*, i32 } [[COMMON_RESUME_OP]]
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; CHECK: resume0:
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; CHECK-NEXT: call void @qux()
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; CHECK-NEXT: br label [[COMMON_RESUME:%.*]]
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; CHECK: resume1:
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; CHECK-NEXT: call void @quux()
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; CHECK-NEXT: br label [[COMMON_RESUME]]
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; CHECK: resume2:
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; CHECK-NEXT: [[SEMICOMMON_LP]] = phi { i8*, i32 } [ [[LP2]], [[LPAD2]] ], [ [[LP3]], [[LPAD3]] ]
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; CHECK-NEXT: call void @quuz()
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; CHECK-NEXT: br label [[COMMON_RESUME]]
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;
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invoke void @maybe_throws() to label %invoke.cont unwind label %lpad
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invoke.cont:
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invoke void @maybe_throws() to label %invoke.cont2 unwind label %lpad2
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invoke.cont2:
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invoke void @maybe_throws() to label %invoke.cont3 unwind label %lpad3
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invoke.cont3:
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ret void
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lpad:
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%lp = landingpad { i8*, i32 } cleanup
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call void @foo()
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br i1 %cond, label %resume0, label %resume1
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lpad2:
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%lp2 = landingpad { i8*, i32 } cleanup
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call void @bar()
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br label %resume2
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lpad3:
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%lp3 = landingpad { i8*, i32 } cleanup
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call void @baz()
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br label %resume2
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resume0:
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call void @qux()
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call void @common()
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resume { i8*, i32 } %lp
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resume1:
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call void @quux()
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call void @common()
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resume { i8*, i32 } %lp
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resume2:
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%semicommon.lp = phi { i8*, i32 } [ %lp2, %lpad2 ], [ %lp3, %lpad3 ]
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call void @quuz()
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call void @common()
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resume { i8*, i32 } %semicommon.lp
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}
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declare dso_local i32 @__gxx_personality_v0(...)
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