[llvm] 069d7ef - [RISCV] Add a LocalStackSlotAllocation test
via llvm-commits
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Sun Oct 2 17:17:11 PDT 2022
Author: luxufan
Date: 2022-09-30T22:36:03Z
New Revision: 069d7ef084b78ff136eeaabfadfc23695dca3665
URL: https://github.com/llvm/llvm-project/commit/069d7ef084b78ff136eeaabfadfc23695dca3665
DIFF: https://github.com/llvm/llvm-project/commit/069d7ef084b78ff136eeaabfadfc23695dca3665.diff
LOG: [RISCV] Add a LocalStackSlotAllocation test
Differential Revision: https://reviews.llvm.org/D134884
Added:
llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll b/llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll
new file mode 100644
index 0000000000000..544834a5d87db
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll
@@ -0,0 +1,54 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s | FileCheck %s --check-prefix=RV32I
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s | FileCheck %s --check-prefix=RV64I
+
+; This test case test the LocalStackSlotAllocation pass that use a base register
+; for the frame index that its offset is out-of-range (for RISC-V. the immediate
+; is 12 bits for the load store instruction (excludes vector load / store))
+; TODO: Enable LocalStackSlotAllocation pass.
+define void @use_frame_base_reg() {
+; RV32I-LABEL: use_frame_base_reg:
+; RV32I: # %bb.0:
+; RV32I-NEXT: lui a0, 24
+; RV32I-NEXT: addi a0, a0, 1712
+; RV32I-NEXT: sub sp, sp, a0
+; RV32I-NEXT: .cfi_def_cfa_offset 100016
+; RV32I-NEXT: lui a0, 24
+; RV32I-NEXT: addi a0, a0, 1708
+; RV32I-NEXT: add a0, sp, a0
+; RV32I-NEXT: lb a0, 0(a0)
+; RV32I-NEXT: lui a0, 24
+; RV32I-NEXT: addi a0, a0, 1704
+; RV32I-NEXT: add a0, sp, a0
+; RV32I-NEXT: lb a0, 0(a0)
+; RV32I-NEXT: lui a0, 24
+; RV32I-NEXT: addi a0, a0, 1712
+; RV32I-NEXT: add sp, sp, a0
+; RV32I-NEXT: ret
+;
+; RV64I-LABEL: use_frame_base_reg:
+; RV64I: # %bb.0:
+; RV64I-NEXT: lui a0, 24
+; RV64I-NEXT: addiw a0, a0, 1712
+; RV64I-NEXT: sub sp, sp, a0
+; RV64I-NEXT: .cfi_def_cfa_offset 100016
+; RV64I-NEXT: lui a0, 24
+; RV64I-NEXT: addiw a0, a0, 1708
+; RV64I-NEXT: add a0, sp, a0
+; RV64I-NEXT: lb a0, 0(a0)
+; RV64I-NEXT: lui a0, 24
+; RV64I-NEXT: addiw a0, a0, 1704
+; RV64I-NEXT: add a0, sp, a0
+; RV64I-NEXT: lb a0, 0(a0)
+; RV64I-NEXT: lui a0, 24
+; RV64I-NEXT: addiw a0, a0, 1712
+; RV64I-NEXT: add sp, sp, a0
+; RV64I-NEXT: ret
+
+ %va = alloca i8, align 4
+ %va1 = alloca i8, align 4
+ %large = alloca [ 100000 x i8 ]
+ %argp.cur = load volatile i8, i8* %va, align 4
+ %argp.next = load volatile i8, i8* %va1, align 4
+ ret void
+}
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