[PATCH] D134884: [RISCV] Add a LocalStackSlotAllocation test

[luxufan via Phabricator via llvm-commits]

StephenFan created this revision.
StephenFan added reviewers: asb, craig.topper, luismarques, reames, jrtc27.
Herald added subscribers: sunshaoce, VincentWu, vkmr, frasercrmck, evandro, apazos, sameer.abuasal, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, shiva0217, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar, arichardson.
Herald added a project: All.
StephenFan requested review of this revision.
Herald added subscribers: llvm-commits, pcwang-thead, eopXD, MaskRay.
Herald added a project: LLVM.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134884

Files:
  llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll


Index: llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/RISCV/local-stack-slot-allocation.ll
@@ -0,0 +1,33 @@
+
+; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s | FileCheck %s
+
+; 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() {
+; CHECK-LABEL: use_frame_base_reg
+; CHECK:       # %bb.0
+; CHECK-NEXT:     lui a0, 24
+; CHECK-NEXT:     addiw a0, a0, 1712
+; CHECK-NEXT:     sub sp, sp, a0
+; CHECK-NEXT:     .cfi_def_cfa_offset 100016
+; CHECK-NEXT:     lui a0, 24
+; CHECK-NEXT:     addiw a0, a0, 1708
+; CHECK-NEXT:     add a0, sp, a0
+; CHECK-NEXT:     lb a0, 0(a0)
+; CHECK-NEXT:     lui a0, 24
+; CHECK-NEXT:     addiw a0, a0, 1704
+; CHECK-NEXT:     add a0, sp, a0
+; CHECK-NEXT:     lb a0, 0(a0)
+; CHECK-NEXT:     lui a0, 24
+; CHECK-NEXT:     addiw a0, a0, 1712
+; CHECK-NEXT:     add sp, sp, a0
+; CHECK-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
+}


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D134884.463916.patch
Type: text/x-patch
Size: 1430 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220929/9aa68ff8/attachment.bin>