b6b492880f
In #67707, the minimum function alignment on RISC-V was set to 4. When RVC (compressed instructions) is enabled, the minimum alignment can be reduced to 2. This patch implements this by delegating the choice of minimum alignment to a new `MCPlusBuilder::getMinFunctionAlignment` function. This way, the target-dependent code in `BinaryFunction` is minimized.
39 lines
1.0 KiB
ArmAsm
39 lines
1.0 KiB
ArmAsm
## Test that BOLT uses a minimum function alignment of 4 (or 2 for RVC) bytes.
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# RUN: llvm-mc -triple=riscv64 -filetype=obj -o %t.o %s
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# RUN: ld.lld -q -o %t %t.o
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# RUN: llvm-bolt --align-functions=1 --use-old-text=0 -o %t.bolt %t
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# RUN: llvm-nm -n %t.bolt | FileCheck %s
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# RUN: llvm-mc -triple=riscv64 -mattr=+c -filetype=obj -o %t-c.o %s
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# RUN: ld.lld -q -o %t-c %t-c.o
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# RUN: llvm-bolt --align-functions=1 --use-old-text=0 -o %t-c.bolt %t-c
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# RUN: llvm-nm -n %t-c.bolt | FileCheck --check-prefix=CHECK-C %s
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# CHECK: {{[048c]}} T _start
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# CHECK-NEXT: {{[048c]}} T dummy
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# CHECK-C: {{[02468ace]}} T _start
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# CHECK-C-NEXT: {{[02468ace]}} T dummy
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.text
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# Make sure input binary is only 1 byte aligned. BOLT should increase the
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# alignment to 2 or 4 bytes.
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.byte 0
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.balign 1
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.globl _start
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.type _start, @function
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_start:
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# Dummy reloc to force relocation mode.
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.reloc 0, R_RISCV_NONE
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ret
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.size _start, .-_start
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.globl dummy
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.type dummy, @function
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dummy:
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ret
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.size dummy, .-dummy
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