diff options
Diffstat (limited to 'llvm/test/CodeGen/RISCV/split-sp-adjust.ll')
| -rw-r--r-- | llvm/test/CodeGen/RISCV/split-sp-adjust.ll | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/RISCV/split-sp-adjust.ll b/llvm/test/CodeGen/RISCV/split-sp-adjust.ll new file mode 100644 index 00000000000..49f8e7010d6 --- /dev/null +++ b/llvm/test/CodeGen/RISCV/split-sp-adjust.ll @@ -0,0 +1,45 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \ +; RUN: | FileCheck %s -check-prefix=RV32I + +; The stack size is 2048 and the SP adjustment will be split. +define i32 @SplitSP() nounwind { +; RV32I-LABEL: SplitSP: +; RV32I: # %bb.0: # %entry +; RV32I-NEXT: addi sp, sp, -2032 +; RV32I-NEXT: sw ra, 2028(sp) +; RV32I-NEXT: addi sp, sp, -16 +; RV32I-NEXT: addi a0, sp, 16 +; RV32I-NEXT: call foo +; RV32I-NEXT: mv a0, zero +; RV32I-NEXT: addi sp, sp, 16 +; RV32I-NEXT: lw ra, 2028(sp) +; RV32I-NEXT: addi sp, sp, 2032 +; RV32I-NEXT: ret +entry: + %xx = alloca [2028 x i8], align 1 + %0 = getelementptr inbounds [2028 x i8], [2028 x i8]* %xx, i32 0, i32 0 + %call = call i32 @foo(i8* nonnull %0) + ret i32 0 +} + +; The stack size is 2032 and the SP adjustment will not be split. +define i32 @NoSplitSP() nounwind { +; RV32I-LABEL: NoSplitSP: +; RV32I: # %bb.0: # %entry +; RV32I-NEXT: addi sp, sp, -2032 +; RV32I-NEXT: sw ra, 2028(sp) +; RV32I-NEXT: addi a0, sp, 4 +; RV32I-NEXT: call foo +; RV32I-NEXT: mv a0, zero +; RV32I-NEXT: lw ra, 2028(sp) +; RV32I-NEXT: addi sp, sp, 2032 +; RV32I-NEXT: ret +entry: + %xx = alloca [2024 x i8], align 1 + %0 = getelementptr inbounds [2024 x i8], [2024 x i8]* %xx, i32 0, i32 0 + %call = call i32 @foo(i8* nonnull %0) + ret i32 0 +} + +declare i32 @foo(i8*) |
