6a371c7744
This implements [the `.option exact` and `.option noexact` proposal](https://github.com/riscv-non-isa/riscv-asm-manual/pull/122) for RISC-V. `.option exact` turns off: - Compression - Branch Relaxation - Linker Relaxation `.option noexact` turns these back on, and is also the default, matching the current behaviour.
21 lines
538 B
LLVM
21 lines
538 B
LLVM
; RUN: llc -mtriple=riscv32 -mattr=+relax,+c %s --filetype=obj -o - \
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; RUN: | llvm-objdump --triple=riscv32 --mattr=+c -M no-aliases -dr - \
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; RUN: | FileCheck %s
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define i32 @foo(ptr noundef %f) nounwind {
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; CHECK-LABEL: <foo>:
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; CHECK: auipc ra, 0x0
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; CHECK-NEXT: R_RISCV_CALL_PLT undefined
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; CHECK-NEXT: jalr ra, 0x0(ra)
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; CHECK-NEXT: lw a0, 0x0(a0)
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; CHECK-NEXT: c.jr ra
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entry:
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%0 = tail call i32 asm sideeffect "
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.option exact
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call undefined@plt
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lw $0, ($1)
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.option noexact", "=^cr,^cr"(ptr %f)
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ret i32 %0
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}
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