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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
66 lines
1.3 KiB
LLVM
66 lines
1.3 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-pc-mingw32 | FileCheck %s -check-prefix=WIN64
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declare void @bar()
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declare void @baz()
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declare i32 @personality(...)
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; Check for 'nop' between the last call and the epilogue.
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define void @foo1() personality i32 (...)* @personality {
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invoke void @bar()
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to label %normal
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unwind label %catch
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normal:
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ret void
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catch:
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%1 = landingpad { i8*, i32 } cleanup
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resume { i8*, i32 } %1
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}
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; WIN64-LABEL: foo1:
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; WIN64: .seh_proc foo1
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; WIN64: callq bar
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; WIN64: nop
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; WIN64: addq ${{[0-9]+}}, %rsp
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; WIN64: retq
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; Check for 'ud2' after noreturn call
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; WIN64: callq _Unwind_Resume
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; WIN64-NEXT: ud2
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; WIN64: .seh_endproc
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; Check it still works when blocks are reordered.
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@something = global i32 0
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define void @foo2(i1 zeroext %cond ) {
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br i1 %cond, label %a, label %b, !prof !0
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a:
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call void @bar()
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br label %done
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b:
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call void @baz()
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store i32 0, i32* @something
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br label %done
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done:
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ret void
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}
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!0 = !{!"branch_weights", i32 100, i32 0}
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; WIN64-LABEL: foo2:
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; WIN64: callq bar
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; WIN64: nop
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; WIN64: addq ${{[0-9]+}}, %rsp
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; WIN64: retq
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; Check nop is not emitted when call is not adjacent to epilogue.
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define i32 @foo3() {
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call void @bar()
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ret i32 0
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}
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; WIN64-LABEL: foo3:
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; WIN64: callq bar
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; WIN64: xorl
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; WIN64-NOT: nop
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; WIN64: addq ${{[0-9]+}}, %rsp
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; WIN64: retq
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