eabaee0c59
R_RISCV_CALL/R_RISCV_CALL_PLT distinction is not necessary and R_RISCV_CALL has been deprecated. Since https://reviews.llvm.org/D132530 `call foo` assembles to R_RISCV_CALL_PLT. The `@plt` suffix is not useful and can be removed now (matching AArch64 and PowerPC). GNU assembler assembles `call foo` to RISCV_CALL_PLT since 2022-09 (70f35d72ef04cd23771875c1661c9975044a749c). Without this patch, unconditionally changing MO_CALL to MO_PLT could create `jump .L1@plt, a0`, which is invalid in LLVM integrated assembler and GNU assembler.
44 lines
1.3 KiB
LLVM
44 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
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; RUN: | FileCheck %s -check-prefix=RV32I
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; The stack size is 2048 and the SP adjustment will be split.
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define i32 @SplitSP() nounwind {
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; RV32I-LABEL: SplitSP:
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; RV32I: # %bb.0: # %entry
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; RV32I-NEXT: addi sp, sp, -2032
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; RV32I-NEXT: sw ra, 2028(sp) # 4-byte Folded Spill
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; RV32I-NEXT: addi sp, sp, -16
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; RV32I-NEXT: addi a0, sp, 16
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; RV32I-NEXT: call foo
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; RV32I-NEXT: li a0, 0
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; RV32I-NEXT: addi sp, sp, 16
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; RV32I-NEXT: lw ra, 2028(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 2032
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; RV32I-NEXT: ret
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entry:
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%xx = alloca [2028 x i8], align 1
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%call = call i32 @foo(ptr nonnull %xx)
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ret i32 0
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}
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; The stack size is 2032 and the SP adjustment will not be split.
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define i32 @NoSplitSP() nounwind {
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; RV32I-LABEL: NoSplitSP:
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; RV32I: # %bb.0: # %entry
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; RV32I-NEXT: addi sp, sp, -2032
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; RV32I-NEXT: sw ra, 2028(sp) # 4-byte Folded Spill
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; RV32I-NEXT: addi a0, sp, 4
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; RV32I-NEXT: call foo
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; RV32I-NEXT: li a0, 0
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; RV32I-NEXT: lw ra, 2028(sp) # 4-byte Folded Reload
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; RV32I-NEXT: addi sp, sp, 2032
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; RV32I-NEXT: ret
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entry:
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%xx = alloca [2024 x i8], align 1
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%call = call i32 @foo(ptr nonnull %xx)
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ret i32 0
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}
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declare i32 @foo(ptr)
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