RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2026-07-19 15:13:49 -04:00
Code Issues Packages Projects Releases 10 Wiki Activity

[Stackmap] Added callsite counts to emitted function information.

Browse Source 
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281532 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das
2016-09-14 20:22:03 +00:00
parent 0890bf3ed4
commit 9becdeed48
23 changed files with 320 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files
test/Object/stackmap-dump.test
+171 -13
View File
@@ -1,16 +1,174 @@
RUN: llvm-readobj -stackmap %p/Inputs/stackmap-test.macho-x86-64 | FileCheck %s
CHECK: LLVM StackMap Version: 1
CHECK-NEXT: Num Functions: 1
CHECK-NEXT: Function address: 0, stack size: 16
CHECK-NEXT: Num Constants: 1
CHECK-NEXT: #1: 10000000000
CHECK-NEXT: Num Records: 1
CHECK-NEXT: Record ID: 2, instruction offset: 1
CHECK-NEXT: 5 locations:
CHECK-NEXT: #1: Register R#5
CHECK-NEXT: #2: Constant 10
CHECK-NEXT: #3: ConstantIndex #0 (10000000000)
CHECK-NEXT: #4: Direct R#4 + -8
CHECK-NEXT: #5: Indirect [R#6 + -16]
; Note: the macho object file in this test was generated in the following way:
; llc -mtriple=x86_64-apple-darwin %p/test/CodeGen/X86/stackmap.ll -o stackmap.s
; clang -c stackmap.s -o %p/test/Object/Inputs/stackmap-test.macho-x86-64
CHECK: LLVM StackMap Version: 2
CHECK-NEXT: Num Functions: 16
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 24, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 56, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 56, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 56, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 56, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 56, callsite record count: 2
CHECK-NEXT: Function address: 0, stack size: 8, callsite record count: 4
CHECK-NEXT: Function address: 0, stack size: 56, callsite record count: 1
CHECK-NEXT: Function address: 0, stack size: 18446744073709551615, callsite record count: 1
CHECK-NEXT: Num Constants: 3
CHECK-NEXT: #1: 2147483648
CHECK-NEXT: #2: 4294967295
CHECK-NEXT: #3: 4294967296
CHECK-NEXT: Num Records: 20
CHECK-NEXT: Record ID: 1, instruction offset: 4
CHECK-NEXT: 12 locations:
CHECK-NEXT: #1: Constant 4294967295
CHECK-NEXT: #2: Constant 4294967295
CHECK-NEXT: #3: Constant 65536
CHECK-NEXT: #4: Constant 2000000000
CHECK-NEXT: #5: Constant 2147483647
CHECK-NEXT: #6: Constant 4294967295
CHECK-NEXT: #7: Constant 4294967295
CHECK-NEXT: #8: Constant 0
CHECK-NEXT: #9: ConstantIndex #0 (2147483648)
CHECK-NEXT: #10: ConstantIndex #1 (4294967295)
CHECK-NEXT: #11: ConstantIndex #2 (4294967296)
CHECK-NEXT: #12: Constant 4294967295
CHECK-NEXT: 1 live-outs: [ R#7 (8-bytes) ]
CHECK: Record ID: 3, instruction offset: 22
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#3
CHECK-NEXT: #2: Register R#14
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 4, instruction offset: 10
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#5
CHECK-NEXT: #2: Register R#4
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 5, instruction offset: 4
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#0
CHECK-NEXT: #2: Register R#5
CHECK-NEXT: 2 live-outs: [ R#0 (8-bytes) R#7 (8-bytes) ]
CHECK: Record ID: 6, instruction offset: 4
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#4
CHECK-NEXT: #2: Register R#2
CHECK-NEXT: 1 live-outs: [ R#7 (8-bytes) ]
CHECK: Record ID: 7, instruction offset: 10
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#2
CHECK-NEXT: #2: Register R#8
CHECK-NEXT: 1 live-outs: [ R#7 (8-bytes) ]
CHECK: Record ID: 8, instruction offset: 10
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#2
CHECK-NEXT: #2: Register R#8
CHECK-NEXT: 2 live-outs: [ R#0 (8-bytes) R#7 (8-bytes) ]
CHECK: Record ID: 11, instruction offset: 42
CHECK-NEXT: 17 locations:
CHECK-NEXT: #1: Register R#9
CHECK-NEXT: #2: Register R#14
CHECK-NEXT: #3: Register R#10
CHECK-NEXT: #4: Register R#3
CHECK-NEXT: #5: Register R#0
CHECK-NEXT: #6: Register R#13
CHECK-NEXT: #7: Register R#12
CHECK-NEXT: #8: Register R#15
CHECK-NEXT: #9: Indirect [R#6 + 72]
CHECK-NEXT: #10: Indirect [R#6 + 80]
CHECK-NEXT: #11: Indirect [R#6 + 88]
CHECK-NEXT: #12: Indirect [R#6 + 96]
CHECK-NEXT: #13: Indirect [R#6 + 104]
CHECK-NEXT: #14: Indirect [R#6 + 112]
CHECK-NEXT: #15: Indirect [R#6 + 120]
CHECK-NEXT: #16: Indirect [R#6 + 128]
CHECK-NEXT: #17: Indirect [R#6 + 136]
CHECK-NEXT: 1 live-outs: [ R#7 (8-bytes) ]
CHECK: Record ID: 12, instruction offset: 62
CHECK-NEXT: 17 locations:
CHECK-NEXT: #1: Register R#0
CHECK-NEXT: #2: Register R#14
CHECK-NEXT: #3: Register R#10
CHECK-NEXT: #4: Register R#9
CHECK-NEXT: #5: Register R#8
CHECK-NEXT: #6: Register R#4
CHECK-NEXT: #7: Register R#1
CHECK-NEXT: #8: Register R#2
CHECK-NEXT: #9: Register R#5
CHECK-NEXT: #10: Register R#3
CHECK-NEXT: #11: Register R#13
CHECK-NEXT: #12: Register R#12
CHECK-NEXT: #13: Register R#15
CHECK-NEXT: #14: Indirect [R#6 + 112]
CHECK-NEXT: #15: Indirect [R#6 + 120]
CHECK-NEXT: #16: Indirect [R#6 + 128]
CHECK-NEXT: #17: Indirect [R#6 + 136]
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 13, instruction offset: 50
CHECK-NEXT: 1 locations:
CHECK-NEXT: #1: Indirect [R#6 + -48]
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 14, instruction offset: 24
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Register R#0
CHECK-NEXT: #2: Register R#3
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 15, instruction offset: 4
CHECK-NEXT: 1 locations:
CHECK-NEXT: #1: Constant 33
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 16, instruction offset: 32
CHECK-NEXT: 1 locations:
CHECK-NEXT: #1: Direct R#6 + -32
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 17, instruction offset: 32
CHECK-NEXT: 2 locations:
CHECK-NEXT: #1: Direct R#6 + -8
CHECK-NEXT: #2: Direct R#6 + -40
CHECK-NEXT: 1 live-outs: [ R#7 (8-bytes) ]
CHECK: Record ID: 4294967295, instruction offset: 4
CHECK-NEXT: 0 locations:
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 4294967296, instruction offset: 4
CHECK-NEXT: 0 locations:
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 9223372036854775807, instruction offset: 4
CHECK-NEXT: 0 locations:
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 18446744073709551615, instruction offset: 4
CHECK-NEXT: 0 locations:
CHECK-NEXT: 1 live-outs: [ R#7 (8-bytes) ]
CHECK: Record ID: 16, instruction offset: 18
CHECK-NEXT: 1 locations:
CHECK-NEXT: #1: Indirect [R#6 + -44]
CHECK-NEXT: 0 live-outs: [ ]
CHECK: Record ID: 0, instruction offset: 26
CHECK-NEXT: 0 locations:
CHECK-NEXT: 0 live-outs: [ ]