65 lines
2.3 KiB
LLVM
65 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc -global-isel=1 -mtriple=riscv32 -o - %s | FileCheck %s --check-prefix=RV32
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; RUN: llc -global-isel=1 -mtriple=riscv64 -o - %s | FileCheck %s --check-prefix=RV64
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declare void @use_addr(ptr)
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define void @test_scoped_alloca(i64 %n) {
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; RV32-LABEL: test_scoped_alloca:
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; RV32: # %bb.0:
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; RV32-NEXT: addi sp, sp, -16
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; RV32-NEXT: .cfi_def_cfa_offset 16
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; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
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; RV32-NEXT: sw s1, 4(sp) # 4-byte Folded Spill
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; RV32-NEXT: .cfi_offset ra, -4
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; RV32-NEXT: .cfi_offset s0, -8
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; RV32-NEXT: .cfi_offset s1, -12
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; RV32-NEXT: addi s0, sp, 16
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; RV32-NEXT: .cfi_def_cfa s0, 0
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; RV32-NEXT: addi a0, a0, 15
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; RV32-NEXT: andi a0, a0, -16
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; RV32-NEXT: sub a0, sp, a0
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; RV32-NEXT: mv s1, sp
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; RV32-NEXT: mv sp, a0
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; RV32-NEXT: call use_addr
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; RV32-NEXT: mv sp, s1
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; RV32-NEXT: addi sp, s0, -16
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; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
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; RV32-NEXT: lw s1, 4(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: test_scoped_alloca:
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; RV64: # %bb.0:
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; RV64-NEXT: addi sp, sp, -32
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; RV64-NEXT: .cfi_def_cfa_offset 32
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; RV64-NEXT: sd ra, 24(sp) # 8-byte Folded Spill
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; RV64-NEXT: sd s0, 16(sp) # 8-byte Folded Spill
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; RV64-NEXT: sd s1, 8(sp) # 8-byte Folded Spill
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; RV64-NEXT: .cfi_offset ra, -8
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; RV64-NEXT: .cfi_offset s0, -16
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; RV64-NEXT: .cfi_offset s1, -24
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; RV64-NEXT: addi s0, sp, 32
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; RV64-NEXT: .cfi_def_cfa s0, 0
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; RV64-NEXT: addi a0, a0, 15
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; RV64-NEXT: andi a0, a0, -16
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; RV64-NEXT: sub a0, sp, a0
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; RV64-NEXT: mv s1, sp
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; RV64-NEXT: mv sp, a0
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; RV64-NEXT: call use_addr
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; RV64-NEXT: mv sp, s1
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; RV64-NEXT: addi sp, s0, -32
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; RV64-NEXT: ld ra, 24(sp) # 8-byte Folded Reload
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; RV64-NEXT: ld s0, 16(sp) # 8-byte Folded Reload
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; RV64-NEXT: ld s1, 8(sp) # 8-byte Folded Reload
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; RV64-NEXT: addi sp, sp, 32
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; RV64-NEXT: ret
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%sp = call ptr @llvm.stacksave.p0()
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%addr = alloca i8, i64 %n
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call void @use_addr(ptr %addr)
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call void @llvm.stackrestore.p0(ptr %sp)
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ret void
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}
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