5ef02d9963
This change is a preliminary step to support trampolines on RISC-V. Trampolines are used by flang to implement obtaining the address of an internal program (i.e., a nested function in Fortran parlance). In this change we lower `llvm.clear_cache` intrinsic on glibc targets to `__riscv_flush_icache` which is what GCC is currently doing for Linux targets.
52 lines
1.9 KiB
LLVM
52 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mtriple=riscv32 < %s | FileCheck --check-prefix=RV32 %s
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; RUN: llc -mtriple=riscv64 < %s | FileCheck --check-prefix=RV64 %s
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; RUN: llc -mtriple=riscv32-unknown-linux-gnu < %s | FileCheck --check-prefix=RV32-LINUX %s
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; RUN: llc -mtriple=riscv64-unknown-linux-gnu < %s | FileCheck --check-prefix=RV64-LINUX %s
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; RUN: llc -mtriple=riscv32-unknown-linux-musl < %s | FileCheck --check-prefix=RV32-LINUX %s
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; RUN: llc -mtriple=riscv64-unknown-linux-musl < %s | FileCheck --check-prefix=RV64-LINUX %s
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declare void @llvm.clear_cache(ptr, ptr)
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define void @foo(ptr %a, ptr %b) nounwind {
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; RV32-LABEL: foo:
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; RV32: # %bb.0:
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; RV32-NEXT: addi sp, sp, -16
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; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32-NEXT: call __clear_cache
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; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32-NEXT: addi sp, sp, 16
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; RV32-NEXT: ret
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;
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; RV64-LABEL: foo:
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; RV64: # %bb.0:
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; RV64-NEXT: addi sp, sp, -16
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; RV64-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64-NEXT: call __clear_cache
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; RV64-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64-NEXT: addi sp, sp, 16
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; RV64-NEXT: ret
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;
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; RV32-LINUX-LABEL: foo:
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; RV32-LINUX: # %bb.0:
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; RV32-LINUX-NEXT: addi sp, sp, -16
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; RV32-LINUX-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32-LINUX-NEXT: li a2, 0
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; RV32-LINUX-NEXT: call __riscv_flush_icache
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; RV32-LINUX-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32-LINUX-NEXT: addi sp, sp, 16
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; RV32-LINUX-NEXT: ret
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;
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; RV64-LINUX-LABEL: foo:
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; RV64-LINUX: # %bb.0:
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; RV64-LINUX-NEXT: addi sp, sp, -16
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; RV64-LINUX-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64-LINUX-NEXT: li a2, 0
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; RV64-LINUX-NEXT: call __riscv_flush_icache
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; RV64-LINUX-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64-LINUX-NEXT: addi sp, sp, 16
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; RV64-LINUX-NEXT: ret
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call void @llvm.clear_cache(ptr %a, ptr %b)
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ret void
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}
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