f69078b77f
Trying to reduce the diffs from D118333 for cases where it makes more sense to use an FP ABI. Reviewed By: asb, kito-cheng Differential Revision: https://reviews.llvm.org/D120447
203 lines
6.4 KiB
LLVM
203 lines
6.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs < %s \
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; RUN: -target-abi=ilp32d | FileCheck -check-prefix=RV32IFD %s
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; RUN: llc -mtriple=riscv64 -mattr=+d -verify-machineinstrs < %s \
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; RUN: -target-abi=lp64d | FileCheck -check-prefix=RV64IFD %s
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define dso_local double @fld(double *%a) nounwind {
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; RV32IFD-LABEL: fld:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: fld ft0, 0(a0)
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; RV32IFD-NEXT: fld ft1, 24(a0)
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; RV32IFD-NEXT: fadd.d fa0, ft0, ft1
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fld:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: fld ft0, 0(a0)
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; RV64IFD-NEXT: fld ft1, 24(a0)
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; RV64IFD-NEXT: fadd.d fa0, ft0, ft1
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; RV64IFD-NEXT: ret
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%1 = load double, double* %a
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%2 = getelementptr double, double* %a, i32 3
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%3 = load double, double* %2
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; Use both loaded values in an FP op to ensure an fld is used, even for the
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; soft float ABI
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%4 = fadd double %1, %3
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ret double %4
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}
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define dso_local void @fsd(double *%a, double %b, double %c) nounwind {
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; RV32IFD-LABEL: fsd:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: fadd.d ft0, fa0, fa1
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; RV32IFD-NEXT: fsd ft0, 0(a0)
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; RV32IFD-NEXT: fsd ft0, 64(a0)
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fsd:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: fadd.d ft0, fa0, fa1
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; RV64IFD-NEXT: fsd ft0, 0(a0)
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; RV64IFD-NEXT: fsd ft0, 64(a0)
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; RV64IFD-NEXT: ret
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; Use %b and %c in an FP op to ensure floating point registers are used, even
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; for the soft float ABI
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%1 = fadd double %b, %c
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store double %1, double* %a
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%2 = getelementptr double, double* %a, i32 8
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store double %1, double* %2
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ret void
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}
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; Check load and store to a global
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@G = dso_local global double 0.0
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define dso_local double @fld_fsd_global(double %a, double %b) nounwind {
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; RV32IFD-LABEL: fld_fsd_global:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: fadd.d fa0, fa0, fa1
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; RV32IFD-NEXT: lui a0, %hi(G)
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; RV32IFD-NEXT: fld ft0, %lo(G)(a0)
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; RV32IFD-NEXT: fsd fa0, %lo(G)(a0)
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; RV32IFD-NEXT: addi a0, a0, %lo(G)
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; RV32IFD-NEXT: fld ft0, 72(a0)
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; RV32IFD-NEXT: fsd fa0, 72(a0)
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fld_fsd_global:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: fadd.d fa0, fa0, fa1
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; RV64IFD-NEXT: lui a0, %hi(G)
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; RV64IFD-NEXT: fld ft0, %lo(G)(a0)
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; RV64IFD-NEXT: fsd fa0, %lo(G)(a0)
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; RV64IFD-NEXT: addi a0, a0, %lo(G)
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; RV64IFD-NEXT: fld ft0, 72(a0)
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; RV64IFD-NEXT: fsd fa0, 72(a0)
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; RV64IFD-NEXT: ret
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; Use %a and %b in an FP op to ensure floating point registers are used, even
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; for the soft float ABI
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%1 = fadd double %a, %b
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%2 = load volatile double, double* @G
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store double %1, double* @G
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%3 = getelementptr double, double* @G, i32 9
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%4 = load volatile double, double* %3
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store double %1, double* %3
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ret double %1
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}
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; Ensure that 1 is added to the high 20 bits if bit 11 of the low part is 1
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define dso_local double @fld_fsd_constant(double %a) nounwind {
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; RV32IFD-LABEL: fld_fsd_constant:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: lui a0, 912092
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; RV32IFD-NEXT: fld ft0, -273(a0)
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; RV32IFD-NEXT: fadd.d fa0, fa0, ft0
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; RV32IFD-NEXT: fsd fa0, -273(a0)
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fld_fsd_constant:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: lui a0, 228023
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; RV64IFD-NEXT: slli a0, a0, 2
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; RV64IFD-NEXT: fld ft0, -273(a0)
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; RV64IFD-NEXT: fadd.d fa0, fa0, ft0
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; RV64IFD-NEXT: fsd fa0, -273(a0)
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; RV64IFD-NEXT: ret
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%1 = inttoptr i32 3735928559 to double*
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%2 = load volatile double, double* %1
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%3 = fadd double %a, %2
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store double %3, double* %1
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ret double %3
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}
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declare void @notdead(i8*)
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define dso_local double @fld_stack(double %a) nounwind {
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; RV32IFD-LABEL: fld_stack:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: addi sp, sp, -32
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; RV32IFD-NEXT: sw ra, 28(sp) # 4-byte Folded Spill
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; RV32IFD-NEXT: fsd fs0, 16(sp) # 8-byte Folded Spill
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; RV32IFD-NEXT: fmv.d fs0, fa0
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; RV32IFD-NEXT: addi a0, sp, 8
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; RV32IFD-NEXT: call notdead@plt
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; RV32IFD-NEXT: fld ft0, 8(sp)
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; RV32IFD-NEXT: fadd.d fa0, ft0, fs0
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; RV32IFD-NEXT: lw ra, 28(sp) # 4-byte Folded Reload
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; RV32IFD-NEXT: fld fs0, 16(sp) # 8-byte Folded Reload
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; RV32IFD-NEXT: addi sp, sp, 32
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fld_stack:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: addi sp, sp, -32
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; RV64IFD-NEXT: sd ra, 24(sp) # 8-byte Folded Spill
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; RV64IFD-NEXT: fsd fs0, 16(sp) # 8-byte Folded Spill
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; RV64IFD-NEXT: fmv.d fs0, fa0
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; RV64IFD-NEXT: addi a0, sp, 8
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; RV64IFD-NEXT: call notdead@plt
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; RV64IFD-NEXT: fld ft0, 8(sp)
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; RV64IFD-NEXT: fadd.d fa0, ft0, fs0
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; RV64IFD-NEXT: ld ra, 24(sp) # 8-byte Folded Reload
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; RV64IFD-NEXT: fld fs0, 16(sp) # 8-byte Folded Reload
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; RV64IFD-NEXT: addi sp, sp, 32
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; RV64IFD-NEXT: ret
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%1 = alloca double, align 8
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%2 = bitcast double* %1 to i8*
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call void @notdead(i8* %2)
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%3 = load double, double* %1
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%4 = fadd double %3, %a ; force load in to FPR64
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ret double %4
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}
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define dso_local void @fsd_stack(double %a, double %b) nounwind {
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; RV32IFD-LABEL: fsd_stack:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: addi sp, sp, -16
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; RV32IFD-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32IFD-NEXT: fadd.d ft0, fa0, fa1
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; RV32IFD-NEXT: fsd ft0, 0(sp)
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; RV32IFD-NEXT: mv a0, sp
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; RV32IFD-NEXT: call notdead@plt
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; RV32IFD-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32IFD-NEXT: addi sp, sp, 16
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fsd_stack:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: addi sp, sp, -16
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; RV64IFD-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64IFD-NEXT: fadd.d ft0, fa0, fa1
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; RV64IFD-NEXT: fsd ft0, 0(sp)
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; RV64IFD-NEXT: mv a0, sp
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; RV64IFD-NEXT: call notdead@plt
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; RV64IFD-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64IFD-NEXT: addi sp, sp, 16
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; RV64IFD-NEXT: ret
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%1 = fadd double %a, %b ; force store from FPR64
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%2 = alloca double, align 8
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store double %1, double* %2
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%3 = bitcast double* %2 to i8*
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call void @notdead(i8* %3)
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ret void
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}
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; Test selection of store<ST4[%a], trunc to f32>, ..
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define dso_local void @fsd_trunc(float* %a, double %b) nounwind noinline optnone {
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; RV32IFD-LABEL: fsd_trunc:
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; RV32IFD: # %bb.0:
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; RV32IFD-NEXT: fcvt.s.d ft0, fa0
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; RV32IFD-NEXT: fsw ft0, 0(a0)
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; RV32IFD-NEXT: ret
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;
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; RV64IFD-LABEL: fsd_trunc:
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; RV64IFD: # %bb.0:
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; RV64IFD-NEXT: fcvt.s.d ft0, fa0
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; RV64IFD-NEXT: fsw ft0, 0(a0)
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; RV64IFD-NEXT: ret
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%1 = fptrunc double %b to float
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store float %1, float* %a, align 4
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ret void
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}
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