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TheRock/compiler/amd-llvm/bolt/test/X86/fallthrough-to-noop.test
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derek.holloway 7502bf64a4
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## Check that profile data for the fall-through jump is not ignored when there is
## a conditional jump followed by a no-op.
RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown \
RUN: %S/Inputs/ft_to_noop.s -o %t.o
RUN: link_fdata %S/Inputs/ft_to_noop.s %t.o %t.fdata --nmtool llvm-nm
RUN: llvm-strip --strip-unneeded %t.o
RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
RUN: llvm-bolt %t.exe -o %t --data %t.fdata \
RUN: --print-cfg --sequential-disassembly 2>&1 | FileCheck %s
CHECK: Binary Function "foo" after building cfg
CHECK: Exec Count : 20
CHECK: Profile Acc : 100.0%
## This block is terminated with a conditional jump to .Ltmp0 followed by a
## no-op. The profile data contains a count for the fall-through (3) which
## is different from what would be inferred (2). However the destination
## offset of this fall-through jump in the profile data points to the no-op
## following the jump and not the start of the fall-through block .LFT0.
CHECK: Entry Point
CHECK-NEXT: Exec Count : 20
CHECK: Successors: .Ltmp[[#BB1:]] (mispreds: 0, count: 18), .LFT[[#BB2:]] (mispreds: 0, count: 3)
CHECK: .LFT[[#BB2]]
CHECK-NEXT: Exec Count : 3
CHECK: Successors: .Ltmp[[#]] (mispreds: 0, count: 0)
CHECK: .Ltmp[[#BB1]]
CHECK-NEXT: Exec Count : 18