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TheRock/compiler/amd-llvm/bolt/test/X86/hlt-terminator.s
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

25 lines
854 B
ArmAsm

## Check that HLT instruction is handled differently depending on the flags.
## It's a terminator in the user-level code, but the execution can resume in
## ring 0.
# RUN: %clang %cflags %s -static -o %t.exe -nostdlib
# RUN: llvm-bolt %t.exe --print-cfg --print-only=main --terminal-x86-hlt=0 \
# RUN: -o %t.ring0 2>&1 | FileCheck %s --check-prefix=CHECK-RING0
# RUN: llvm-bolt %t.exe --print-cfg --print-only=main \
# RUN: -o %t.ring3 2>&1 | FileCheck %s --check-prefix=CHECK-RING3
# RUN: llvm-objdump -d %t.ring0 --print-imm-hex | FileCheck %s --check-prefix=CHECK-BIN
# CHECK-RING0: BB Count : 1
# CHECK-RING3: BB Count : 2
# CHECK-BIN: <main>:
# CHECK-BIN-NEXT: f4 hlt
# CHECK-BIN-NEXT: c3 retq
.global main
.type main, %function
main:
hlt
retq
.size main, .-main