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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
126 lines
3.1 KiB
LLVM
126 lines
3.1 KiB
LLVM
; RUN: llc < %s -march=xcore | FileCheck %s
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declare void @g()
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declare i32 @__gxx_personality_v0(...)
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declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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declare i8* @__cxa_allocate_exception(i32)
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declare void @__cxa_throw(i8*, i8*, i8*)
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@_ZTIi = external constant i8*
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@_ZTId = external constant i8*
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; CHECK-LABEL: fn_typeid:
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; CHECK: .cfi_startproc
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; CHECK: mkmsk r0, 1
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; CHECK: retsp 0
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; CHECK: .cfi_endproc
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define i32 @fn_typeid() {
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entry:
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%0 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
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ret i32 %0
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}
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; CHECK-LABEL: fn_throw
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; CHECK: .cfi_startproc
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; CHECK: entsp 1
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; CHECK: .cfi_def_cfa_offset 4
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; CHECK: .cfi_offset 15, 0
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; CHECK: ldc r0, 4
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; CHECK: bl __cxa_allocate_exception
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; CHECK: ldaw r1, dp[_ZTIi]
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; CHECK: ldc r2, 0
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; CHECK: bl __cxa_throw
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define void @fn_throw() {
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entry:
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%0 = call i8* @__cxa_allocate_exception(i32 4) nounwind
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call void @__cxa_throw(i8* %0, i8* bitcast (i8** @_ZTIi to i8*), i8* null) noreturn
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unreachable
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}
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; CHECK-LABEL: fn_catch:
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; CHECK-NEXT: [[START:.L[a-zA-Z0-9_]+]]
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; CHECK: .cfi_startproc
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; CHECK: .cfi_personality 0, __gxx_personality_v0
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; CHECK: .cfi_lsda 0, [[LSDA:.L[a-zA-Z0-9_]+]]
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; CHECK: entsp 4
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; CHECK: .cfi_def_cfa_offset 16
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; CHECK: .cfi_offset 15, 0
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define void @fn_catch() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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; N.B. we alloc no variables, hence force compiler to spill
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; CHECK: stw r4, sp[3]
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; CHECK: .cfi_offset 4, -4
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; CHECK: stw r5, sp[2]
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; CHECK: .cfi_offset 5, -8
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; CHECK: stw r6, sp[1]
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; CHECK: .cfi_offset 6, -12
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; CHECK: [[PRE_G:.L[a-zA-Z0-9_]+]]
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; CHECK: bl g
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; CHECK: [[POST_G:.L[a-zA-Z0-9_]+]]
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; CHECK: [[RETURN:.L[a-zA-Z0-9_]+]]
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; CHECK: ldw r6, sp[1]
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; CHECK: ldw r5, sp[2]
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; CHECK: ldw r4, sp[3]
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; CHECK: retsp 4
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invoke void @g() to label %cont unwind label %lpad
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cont:
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ret void
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; CHECK: {{.L[a-zA-Z0-9_]+}}
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; CHECK: [[LANDING:.L[a-zA-Z0-9_]+]]
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; CHECK: mov r5, r1
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; CHECK: mov r4, r0
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; CHECK: bl __cxa_begin_catch
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; CHECK: ldw r6, r0[0]
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; CHECK: bl __cxa_end_catch
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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 (i8** @_ZTIi to i8*)
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catch i8* bitcast (i8** @_ZTId to i8*)
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = extractvalue { i8*, i32 } %0, 1
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%3 = call i8* @__cxa_begin_catch(i8* %1) nounwind
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%4 = bitcast i8* %3 to i32*
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%5 = load i32, i32* %4
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call void @__cxa_end_catch() nounwind
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; CHECK: eq r0, r6, r5
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; CHECK: bf r0, [[RETURN]]
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; CHECK: mov r0, r4
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; CHECK: bl _Unwind_Resume
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; CHECK: [[END:.L[a-zA-Z0-9_]+]]
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; CHECK: .cfi_endproc
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%6 = icmp eq i32 %5, %2
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br i1 %6, label %Resume, label %Exit
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Resume:
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resume { i8*, i32 } %0
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Exit:
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ret void
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}
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; CHECK: [[LSDA]]:
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; CHECK: .byte 255
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; CHECK: .byte 0
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; CHECK: .asciiz
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; CHECK: .byte 3
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; CHECK: .byte 26
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; CHECK: .long [[PRE_G]]-[[START]]
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; CHECK: .long [[POST_G]]-[[PRE_G]]
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; CHECK: .long [[LANDING]]-[[START]]
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; CHECK: .byte 5
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; CHECK: .long [[POST_G]]-[[START]]
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; CHECK: .long [[END]]-[[POST_G]]
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; CHECK: .long 0
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; CHECK: .byte 0
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; CHECK: .byte 0
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; CHECK: .byte 1
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; CHECK: .byte 125
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; CHECK: .byte 2
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; CHECK: .byte 125
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; CHECK: .long _ZTIi
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; CHECK: .long _ZTId
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