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[RISCV] Promote f16 frem with Zfh. 

Add riscv64 coverage for f32 and f64 frem.

Reviewed By: luismarques

Differential Revision: https://reviews.llvm.org/D113531
This commit is contained in:
Craig Topper 2021-11-10 17:20:47 -08:00
parent 996d4ffe30
commit 4183522e80
4 changed files with 68 additions and 9 deletions
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2
llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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@ -337,6 +337,8 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
setOperationAction(ISD::BR_CC, MVT::f16, Expand);
for (auto Op : FPOpToExpand)
setOperationAction(Op, MVT::f16, Expand);
setOperationAction(ISD::FREM, MVT::f16, Promote);
}
if (Subtarget.hasStdExtF()) {

29
llvm/test/CodeGen/RISCV/double-frem.ll
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@ -1,16 +1,27 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV32ID %s
; RUN: | FileCheck -check-prefix=RV32IFD %s
; RUN: llc -mtriple=riscv64 -mattr=+d -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV64IFD %s
define double @frem_f64(double %a, double %b) nounwind {
; RV32ID-LABEL: frem_f64:
; RV32ID: # %bb.0:
; RV32ID-NEXT: addi sp, sp, -16
; RV32ID-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32ID-NEXT: call fmod@plt
; RV32ID-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32ID-NEXT: addi sp, sp, 16
; RV32ID-NEXT: ret
; RV32IFD-LABEL: frem_f64:
; RV32IFD: # %bb.0:
; RV32IFD-NEXT: addi sp, sp, -16
; RV32IFD-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32IFD-NEXT: call fmod@plt
; RV32IFD-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32IFD-NEXT: addi sp, sp, 16
; RV32IFD-NEXT: ret
;
; RV64IFD-LABEL: frem_f64:
; RV64IFD: # %bb.0:
; RV64IFD-NEXT: addi sp, sp, -16
; RV64IFD-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64IFD-NEXT: call fmod@plt
; RV64IFD-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64IFD-NEXT: addi sp, sp, 16
; RV64IFD-NEXT: ret
%1 = frem double %a, %b
ret double %1
}

11
llvm/test/CodeGen/RISCV/float-frem.ll
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@ -1,6 +1,8 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV32IF %s
; RUN: llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV64IF %s
define float @frem_f32(float %a, float %b) nounwind {
; RV32IF-LABEL: frem_f32:
@ -11,6 +13,15 @@ define float @frem_f32(float %a, float %b) nounwind {
; RV32IF-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32IF-NEXT: addi sp, sp, 16
; RV32IF-NEXT: ret
;
; RV64IF-LABEL: frem_f32:
; RV64IF: # %bb.0:
; RV64IF-NEXT: addi sp, sp, -16
; RV64IF-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64IF-NEXT: call fmodf@plt
; RV64IF-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64IF-NEXT: addi sp, sp, 16
; RV64IF-NEXT: ret
%1 = frem float %a, %b
ret float %1
}

35
llvm/test/CodeGen/RISCV/half-frem.ll Normal file
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@ -0,0 +1,35 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+experimental-zfh -verify-machineinstrs \
; RUN: -target-abi ilp32f < %s \
; RUN: | FileCheck -check-prefix=RV32IZFH %s
; RUN: llc -mtriple=riscv64 -mattr=+experimental-zfh -verify-machineinstrs \
; RUN: -target-abi lp64f < %s \
; RUN: | FileCheck -check-prefix=RV64IZFH %s
define half @frem_f16(half %a, half %b) nounwind {
; RV32IZFH-LABEL: frem_f16:
; RV32IZFH: # %bb.0:
; RV32IZFH-NEXT: addi sp, sp, -16
; RV32IZFH-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
; RV32IZFH-NEXT: fcvt.s.h fa0, fa0
; RV32IZFH-NEXT: fcvt.s.h fa1, fa1
; RV32IZFH-NEXT: call fmodf@plt
; RV32IZFH-NEXT: fcvt.h.s fa0, fa0
; RV32IZFH-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
; RV32IZFH-NEXT: addi sp, sp, 16
; RV32IZFH-NEXT: ret
;
; RV64IZFH-LABEL: frem_f16:
; RV64IZFH: # %bb.0:
; RV64IZFH-NEXT: addi sp, sp, -16
; RV64IZFH-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; RV64IZFH-NEXT: fcvt.s.h fa0, fa0
; RV64IZFH-NEXT: fcvt.s.h fa1, fa1
; RV64IZFH-NEXT: call fmodf@plt
; RV64IZFH-NEXT: fcvt.h.s fa0, fa0
; RV64IZFH-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; RV64IZFH-NEXT: addi sp, sp, 16
; RV64IZFH-NEXT: ret
%1 = frem half %a, %b
ret half %1
}