53005fd435
This PR implements the emitting of the post-link CFG information in PGO analysis map, as explained in the [RFC](https://discourse.llvm.org/t/rfc-extending-the-pgo-analysis-map-with-propeller-cfg-frequencies/88617). This is enabled by a flag `pgo-analysis-map-emit-bb-sections-cfg`. This PR bumps the SHT_LLVM_BB_ADDR_MAP version to 5. Also includes some refactoring changes related to storing the CFG in the Basic block sections profile reader.
101 lines
4.0 KiB
LLVM
101 lines
4.0 KiB
LLVM
; Verify PGO analysis map features with basic block sections profile.
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;
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; RUN: echo 'v1' > %t
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; RUN: echo 'f foo' >> %t
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; RUN: echo 'g 0:1000,1:800,2:200 1:800,3:800 2:200,3:200 3:1000' >> %t
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; RUN: echo 'c 0 1 2' >> %t
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;
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; RUN: llc < %s -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=%t -basic-block-address-map -pgo-analysis-map=all -pgo-analysis-map-emit-bb-sections-cfg | FileCheck %s
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define void @foo(i1 %cond) nounwind !prof !0 {
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entry:
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br label %bb1
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bb1:
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br i1 %cond, label %bb2, label %bb3, !prof !1
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bb2:
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br label %bb3
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bb3:
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ret void
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}
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!0 = !{!"function_entry_count", i64 1500}
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!1 = !{!"branch_weights", i32 1200, i32 300}
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;; Verify that foo's PGO map contains both IRPGO and Propeller CFG profiles.
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; CHECK: .section .llvm_bb_addr_map,"o",@llvm_bb_addr_map,.text.foo
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; CHECK-NEXT: .byte 5 # version
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; CHECK-NEXT: .short 143 # feature
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; CHECK: .quad .Lfunc_begin0 # base address
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; CHECK: .byte 0 # BB id
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; CHECK: .byte 1 # BB id
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; CHECK: .byte 2 # BB id
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; CHECK: .byte 3 # BB id
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; CHECK: .ascii "\334\013" # function entry count
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200 " # basic block frequency
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; CHECK-NEXT: .ascii "\350\007" # basic block frequency (propeller)
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; CHECK-NEXT: .byte 1 # basic block successor count
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; CHECK-NEXT: .byte 1 # successor BB ID
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; CHECK-NEXT: .ascii "\200\200\200\200\b" # successor branch probability
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; CHECK-NEXT: .ascii "\240\006" # successor branch frequency (propeller)
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200 " # basic block frequency
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; CHECK-NEXT: .ascii "\240\006" # basic block frequency (propeller)
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; CHECK-NEXT: .byte 2 # basic block successor count
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; CHECK-NEXT: .byte 2 # successor BB ID
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; CHECK-NEXT: .ascii "\200\200\200\200\004" # successor branch probability
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; CHECK-NEXT: .byte 0 # successor branch frequency (propeller)
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; CHECK-NEXT: .byte 3 # successor BB ID
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; CHECK-NEXT: .ascii "\200\200\200\200\004" # successor branch probability
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; CHECK-NEXT: .ascii "\240\006" # successor branch frequency (propeller)
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200\020" # basic block frequency
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; CHECK-NEXT: .ascii "\310\001" # basic block frequency (propeller)
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; CHECK-NEXT: .byte 1 # basic block successor count
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; CHECK-NEXT: .byte 3 # successor BB ID
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; CHECK-NEXT: .ascii "\200\200\200\200\b" # successor branch probability
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; CHECK-NEXT: .ascii "\310\001" # successor branch frequency (propeller)
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200 " # basic block frequency
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; CHECK-NEXT: .ascii "\350\007" # basic block frequency (propeller)
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; CHECK-NEXT: .byte 0 # basic block successor count
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define void @bar(i1 %cond) nounwind !prof !2 {
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entry:
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br i1 %cond, label %bb1, label %bb2, !prof !3
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bb1:
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ret void
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bb2:
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ret void
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}
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!2 = !{!"function_entry_count", i64 80}
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!3 = !{!"branch_weights", i32 2, i32 78}
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;; Verify that the PGO map for bar only includes IRPGO data since it doesn't
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;; have Propeller profile.
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; CHECK: .section .llvm_bb_addr_map,"o",@llvm_bb_addr_map,.text.bar
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; CHECK-NEXT: .byte 5 # version
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; CHECK-NEXT: .short 7 # feature
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; CHECK: .quad .Lfunc_begin1 # function address
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; CHECK: .byte 0 # BB id
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; CHECK: .byte 1 # BB id
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; CHECK: .byte 2 # BB id
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; CHECK: .byte 80 # function entry count
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200 " # basic block frequency
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; CHECK-NEXT: .byte 2 # basic block successor count
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; CHECK-NEXT: .byte 1 # successor BB ID
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; CHECK-NEXT: .ascii "\200\200\200\200\004" # successor branch probability
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; CHECK-NEXT: .byte 2 # successor BB ID
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; CHECK-NEXT: .ascii "\200\200\200\200\004" # successor branch probability
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200\020" # basic block frequency
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; CHECK-NEXT: .byte 0 # basic block successor count
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; CHECK-NEXT: .ascii "\200\200\200\200\200\200\200\020" # basic block frequency
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; CHECK-NEXT: .byte 0 # basic block successor count
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