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cc714e2142
The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239940 91177308-0d34-0410-b5e6-96231b3b80d8
67 lines
2.2 KiB
LLVM
67 lines
2.2 KiB
LLVM
; RUN: opt -S -winehprepare < %s | FileCheck %s
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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declare void @might_crash(i8* %ehptr)
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declare i32 @filt()
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declare void @cleanup()
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declare i32 @__C_specific_handler(...)
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declare i32 @llvm.eh.typeid.for(i8*)
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define void @resume_phi() personality i32 (...)* @__C_specific_handler {
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entry:
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invoke void @might_crash(i8* null)
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to label %return unwind label %lpad1
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lpad1:
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%ehvals1 = landingpad { i8*, i32 }
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catch i32 ()* @filt
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%ehptr1 = extractvalue { i8*, i32 } %ehvals1, 0
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%ehsel1 = extractvalue { i8*, i32 } %ehvals1, 1
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%filt_sel = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @filt to i8*))
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%matches = icmp eq i32 %ehsel1, %filt_sel
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br i1 %matches, label %__except, label %eh.resume
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__except:
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invoke void @might_crash(i8* %ehptr1)
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to label %return unwind label %lpad2
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lpad2:
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%ehvals2 = landingpad { i8*, i32 }
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cleanup
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%ehptr2 = extractvalue { i8*, i32 } %ehvals2, 0
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%ehsel2 = extractvalue { i8*, i32 } %ehvals2, 1
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call void @cleanup()
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br label %eh.resume
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return:
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ret void
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eh.resume:
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%ehptr.phi = phi i8* [ %ehptr1, %lpad1 ], [ %ehptr2, %lpad2 ]
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%ehsel.phi = phi i32 [ %ehsel1, %lpad1 ], [ %ehsel2, %lpad2 ]
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%ehval.phi1 = insertvalue { i8*, i32 } undef, i8* %ehptr.phi, 0
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%ehval.phi2 = insertvalue { i8*, i32 } %ehval.phi1, i32 %ehsel.phi, 1
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resume { i8*, i32 } %ehval.phi2
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}
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; CHECK-LABEL: define void @resume_phi()
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; CHECK: invoke void @might_crash(i8* null)
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; CHECK: landingpad { i8*, i32 }
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; CHECK-NEXT: catch i32 ()* @filt
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; CHECK-NEXT: call i8* (...) @llvm.eh.actions(
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; CHECK-SAME: i32 1, i8* bitcast (i32 ()* @filt to i8*), i32 -1, i8* blockaddress(@resume_phi, %__except))
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; CHECK-NEXT: indirectbr {{.*}} [label %__except]
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;
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; CHECK: __except:
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; CHECK: call i32 @llvm.eh.exceptioncode()
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; CHECK: invoke void @might_crash(i8* %{{.*}})
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; CHECK: landingpad { i8*, i32 }
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; CHECK-NEXT: cleanup
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; CHECK-NEXT: call i8* (...) @llvm.eh.actions(i32 0, void (i8*, i8*)* @resume_phi.cleanup)
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; CHECK-NEXT: indirectbr {{.*}} []
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; CHECK-LABEL: define internal void @resume_phi.cleanup(i8*, i8*)
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; CHECK: call void @cleanup()
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