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c8b1f095a3
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 llvm-svn: 239940
55 lines
1.5 KiB
LLVM
55 lines
1.5 KiB
LLVM
; RUN: llc -mtriple x86_64-pc-linux-gnu < %s | FileCheck %s
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; This test demonstrates that it is possible to use functions for typeinfo
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; instead of global variables. While __gxx_personality_v0 would never know what
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; to do with them, other EH schemes such as SEH might use them.
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declare i32 @__gxx_personality_v0(...)
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declare void @filt0()
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declare void @filt1()
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declare void @_Z1fv()
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declare i32 @llvm.eh.typeid.for(i8*)
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define i32 @main() uwtable personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @_Z1fv()
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to label %try.cont unwind label %lpad
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try.cont:
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ret i32 0
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lpad:
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%0 = landingpad { i8*, i32 }
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cleanup
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catch i8* bitcast (void ()* @filt0 to i8*)
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catch i8* bitcast (void ()* @filt1 to i8*)
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%sel = extractvalue { i8*, i32 } %0, 1
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%id0 = call i32 @llvm.eh.typeid.for(i8* bitcast (void ()* @filt0 to i8*))
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%is_f0 = icmp eq i32 %sel, %id0
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br i1 %is_f0, label %try.cont, label %check_f1
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check_f1:
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%id1 = call i32 @llvm.eh.typeid.for(i8* bitcast (void ()* @filt1 to i8*))
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%is_f1 = icmp eq i32 %sel, %id1
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br i1 %is_f1, label %try.cont, label %eh.resume
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eh.resume:
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resume { i8*, i32 } %0
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}
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; CHECK-LABEL: main:
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; CHECK: .cfi_startproc
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; CHECK: .cfi_personality 3, __gxx_personality_v0
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; CHECK: .cfi_lsda 3, .Lexception0
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; CHECK: .cfi_def_cfa_offset 16
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; CHECK: callq _Z1fv
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; CHECK: retq
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; CHECK: cmpl $2, %edx
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; CHECK: je
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; CHECK: cmpl $1, %edx
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; CHECK: je
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; CHECK: callq _Unwind_Resume
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; CHECK: .cfi_endproc
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; CHECK: GCC_except_table0:
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; CHECK: Lexception0:
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