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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2016-09-14 20:22:03 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2016-09-14 20:22:03 +0000 |
| commit | 23f06e53d8c2febb80192f6ff93bce78a6af011d (patch) | |
| tree | afb1f3697ae9d2d39ce72b47eb495fa16ff6dc5e /llvm/test/CodeGen/X86/anyregcc.ll | |
| parent | 3caf155bd3fc22b4d0c0e0dbe540290422ee085b (diff) | |
| download | bcm5719-llvm-23f06e53d8c2febb80192f6ff93bce78a6af011d.tar.gz bcm5719-llvm-23f06e53d8c2febb80192f6ff93bce78a6af011d.zip | |
[Stackmap] Added callsite counts to emitted function information.
Summary:
It was previously not possible for tools to use solely the stackmap
information emitted to reconstruct the return addresses of callsites in
the map, which is necessary to use the information to walk a stack. This
patch adds per-function callsite counts when emitting the stackmap
section in order to resolve the problem. Note that this slightly alters
the stackmap format, so external tools parsing these maps will need to
be updated.
**Problem Details:**
Records only store their offset from the beginning of the function they
belong to. While these records and the functions are output in program
order, it is not possible to determine where the end of one function's
records are without the callsite count when processing the records to
compute return addresses.
Patch by Kavon Farvardin!
Reviewers: atrick, ributzka, sanjoy
Subscribers: nemanjai
Differential Revision: https://reviews.llvm.org/D23487
llvm-svn: 281532
Diffstat (limited to 'llvm/test/CodeGen/X86/anyregcc.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/anyregcc.ll | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/X86/anyregcc.ll b/llvm/test/CodeGen/X86/anyregcc.ll index 129aadfae88..018a92a52f7 100644 --- a/llvm/test/CodeGen/X86/anyregcc.ll +++ b/llvm/test/CodeGen/X86/anyregcc.ll @@ -7,7 +7,7 @@ ; CHECK-LABEL: .section __LLVM_STACKMAPS,__llvm_stackmaps ; CHECK-NEXT: __LLVM_StackMaps: ; Header -; CHECK-NEXT: .byte 1 +; CHECK-NEXT: .byte 2 ; CHECK-NEXT: .byte 0 ; CHECK-NEXT: .short 0 ; Num Functions @@ -20,20 +20,28 @@ ; Functions and stack size ; CHECK-NEXT: .quad _test ; CHECK-NEXT: .quad 8 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _property_access1 ; CHECK-NEXT: .quad 8 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _property_access2 ; CHECK-NEXT: .quad 24 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _property_access3 ; CHECK-NEXT: .quad 24 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _anyreg_test1 ; CHECK-NEXT: .quad 56 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _anyreg_test2 ; CHECK-NEXT: .quad 56 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _patchpoint_spilldef ; CHECK-NEXT: .quad 56 +; CHECK-NEXT: .quad 1 ; CHECK-NEXT: .quad _patchpoint_spillargs ; CHECK-NEXT: .quad 88 +; CHECK-NEXT: .quad 1 ; No constants |
