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clang-p2996/llvm/test/CodeGen/RISCV/shrinkwrap.ll
Fangrui Song eabaee0c59 [RISCV] Omit "@plt" in assembly output "call foo@plt" (#72467) 
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.
2024-01-07 12:09:44 -08:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple riscv32 -enable-shrink-wrap=false < %s \
; RUN: | FileCheck %s -check-prefix=RV32I-SW-NO
; RUN: llc -mtriple riscv32 < %s \
; RUN: | FileCheck %s -check-prefix=RV32I-SW
; RUN: llc -mtriple riscv32 -mattr=+save-restore < %s \
; RUN: | FileCheck %s -check-prefix=RV32I-SW-SR
; RUN: llc -mtriple riscv64 < %s \
; RUN: | FileCheck %s -check-prefix=RV64I-SW
declare void @abort()
define void @eliminate_restore(i32 %n) nounwind {
; RV32I-SW-NO-LABEL: eliminate_restore:
; RV32I-SW-NO: # %bb.0:
; RV32I-SW-NO-NEXT: addi sp, sp, -16
; RV32I-SW-NO-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32I-SW-NO-NEXT: li a1, 32
; RV32I-SW-NO-NEXT: bgeu a1, a0, .LBB0_2
; RV32I-SW-NO-NEXT: # %bb.1: # %if.end
; RV32I-SW-NO-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32I-SW-NO-NEXT: addi sp, sp, 16
; RV32I-SW-NO-NEXT: ret
; RV32I-SW-NO-NEXT: .LBB0_2: # %if.then
; RV32I-SW-NO-NEXT: call abort
;
; RV32I-SW-LABEL: eliminate_restore:
; RV32I-SW: # %bb.0:
; RV32I-SW-NEXT: li a1, 32
; RV32I-SW-NEXT: bgeu a1, a0, .LBB0_2
; RV32I-SW-NEXT: # %bb.1: # %if.end
; RV32I-SW-NEXT: ret
; RV32I-SW-NEXT: .LBB0_2: # %if.then
; RV32I-SW-NEXT: addi sp, sp, -16
; RV32I-SW-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32I-SW-NEXT: call abort
;
; RV32I-SW-SR-LABEL: eliminate_restore:
; RV32I-SW-SR: # %bb.0:
; RV32I-SW-SR-NEXT: li a1, 32
; RV32I-SW-SR-NEXT: bgeu a1, a0, .LBB0_2
; RV32I-SW-SR-NEXT: # %bb.1: # %if.end
; RV32I-SW-SR-NEXT: ret
; RV32I-SW-SR-NEXT: .LBB0_2: # %if.then
; RV32I-SW-SR-NEXT: call t0, __riscv_save_0
; RV32I-SW-SR-NEXT: call abort
;
; RV64I-SW-LABEL: eliminate_restore:
; RV64I-SW: # %bb.0:
; RV64I-SW-NEXT: sext.w a0, a0
; RV64I-SW-NEXT: li a1, 32
; RV64I-SW-NEXT: bgeu a1, a0, .LBB0_2
; RV64I-SW-NEXT: # %bb.1: # %if.end
; RV64I-SW-NEXT: ret
; RV64I-SW-NEXT: .LBB0_2: # %if.then
; RV64I-SW-NEXT: addi sp, sp, -16
; RV64I-SW-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64I-SW-NEXT: call abort
%cmp = icmp ule i32 %n, 32
br i1 %cmp, label %if.then, label %if.end
if.then:
call void @abort()
unreachable
if.end:
ret void
}
declare void @notdead(ptr)
define void @conditional_alloca(i32 %n) nounwind {
; RV32I-SW-NO-LABEL: conditional_alloca:
; RV32I-SW-NO: # %bb.0:
; RV32I-SW-NO-NEXT: addi sp, sp, -16
; RV32I-SW-NO-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32I-SW-NO-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
; RV32I-SW-NO-NEXT: addi s0, sp, 16
; RV32I-SW-NO-NEXT: li a1, 32
; RV32I-SW-NO-NEXT: bltu a1, a0, .LBB1_2
; RV32I-SW-NO-NEXT: # %bb.1: # %if.then
; RV32I-SW-NO-NEXT: addi a0, a0, 15
; RV32I-SW-NO-NEXT: andi a0, a0, -16
; RV32I-SW-NO-NEXT: sub a0, sp, a0
; RV32I-SW-NO-NEXT: mv sp, a0
; RV32I-SW-NO-NEXT: call notdead
; RV32I-SW-NO-NEXT: .LBB1_2: # %if.end
; RV32I-SW-NO-NEXT: addi sp, s0, -16
; RV32I-SW-NO-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32I-SW-NO-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32I-SW-NO-NEXT: addi sp, sp, 16
; RV32I-SW-NO-NEXT: ret
;
; RV32I-SW-LABEL: conditional_alloca:
; RV32I-SW: # %bb.0:
; RV32I-SW-NEXT: li a1, 32
; RV32I-SW-NEXT: bltu a1, a0, .LBB1_2
; RV32I-SW-NEXT: # %bb.1: # %if.then
; RV32I-SW-NEXT: addi sp, sp, -16
; RV32I-SW-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32I-SW-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
; RV32I-SW-NEXT: addi s0, sp, 16
; RV32I-SW-NEXT: addi a0, a0, 15
; RV32I-SW-NEXT: andi a0, a0, -16
; RV32I-SW-NEXT: sub a0, sp, a0
; RV32I-SW-NEXT: mv sp, a0
; RV32I-SW-NEXT: call notdead
; RV32I-SW-NEXT: addi sp, s0, -16
; RV32I-SW-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32I-SW-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
; RV32I-SW-NEXT: addi sp, sp, 16
; RV32I-SW-NEXT: .LBB1_2: # %if.end
; RV32I-SW-NEXT: ret
;
; RV32I-SW-SR-LABEL: conditional_alloca:
; RV32I-SW-SR: # %bb.0:
; RV32I-SW-SR-NEXT: li a1, 32
; RV32I-SW-SR-NEXT: bltu a1, a0, .LBB1_2
; RV32I-SW-SR-NEXT: # %bb.1: # %if.then
; RV32I-SW-SR-NEXT: call t0, __riscv_save_1
; RV32I-SW-SR-NEXT: addi s0, sp, 16
; RV32I-SW-SR-NEXT: addi a0, a0, 15
; RV32I-SW-SR-NEXT: andi a0, a0, -16
; RV32I-SW-SR-NEXT: sub a0, sp, a0
; RV32I-SW-SR-NEXT: mv sp, a0
; RV32I-SW-SR-NEXT: call notdead
; RV32I-SW-SR-NEXT: addi sp, s0, -16
; RV32I-SW-SR-NEXT: tail __riscv_restore_1
; RV32I-SW-SR-NEXT: .LBB1_2: # %if.end
; RV32I-SW-SR-NEXT: ret
;
; RV64I-SW-LABEL: conditional_alloca:
; RV64I-SW: # %bb.0:
; RV64I-SW-NEXT: sext.w a1, a0
; RV64I-SW-NEXT: li a2, 32
; RV64I-SW-NEXT: bltu a2, a1, .LBB1_2
; RV64I-SW-NEXT: # %bb.1: # %if.then
; RV64I-SW-NEXT: addi sp, sp, -16
; RV64I-SW-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64I-SW-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
; RV64I-SW-NEXT: addi s0, sp, 16
; RV64I-SW-NEXT: slli a0, a0, 32
; RV64I-SW-NEXT: srli a0, a0, 32
; RV64I-SW-NEXT: addi a0, a0, 15
; RV64I-SW-NEXT: andi a0, a0, -16
; RV64I-SW-NEXT: sub a0, sp, a0
; RV64I-SW-NEXT: mv sp, a0
; RV64I-SW-NEXT: call notdead
; RV64I-SW-NEXT: addi sp, s0, -16
; RV64I-SW-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64I-SW-NEXT: ld s0, 0(sp) # 8-byte Folded Reload
; RV64I-SW-NEXT: addi sp, sp, 16
; RV64I-SW-NEXT: .LBB1_2: # %if.end
; RV64I-SW-NEXT: ret
%cmp = icmp ule i32 %n, 32
br i1 %cmp, label %if.then, label %if.end
if.then:
%addr = alloca i8, i32 %n
call void @notdead(ptr %addr)
br label %if.end
if.end:
ret void
}
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