da8c9521ee
According to the revised description in `LoongArch Reference Manual v1.02`, frint.[s/d] does not judge whether floating-point inexact exceptions are allowed indicated by FCSR, i.e. always executes roundToIntegralExact(x). What's more, the manual also specifically defines that frint.s/d is only necessary to be defined in LA64. So ISD::FRINT is legal for LA64. Differential Revision: https://reviews.llvm.org/D133337
80 lines
2.5 KiB
LLVM
80 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc --mtriple=loongarch32 --mattr=+f,-d < %s | FileCheck %s --check-prefix=LA32F
|
|
; RUN: llc --mtriple=loongarch32 --mattr=+d < %s | FileCheck %s --check-prefix=LA32D
|
|
; RUN: llc --mtriple=loongarch64 --mattr=+f,-d < %s | FileCheck %s --check-prefix=LA64F
|
|
; RUN: llc --mtriple=loongarch64 --mattr=+d < %s | FileCheck %s --check-prefix=LA64D
|
|
|
|
define float @rint_f32(float %f) nounwind {
|
|
; LA32F-LABEL: rint_f32:
|
|
; LA32F: # %bb.0: # %entry
|
|
; LA32F-NEXT: addi.w $sp, $sp, -16
|
|
; LA32F-NEXT: st.w $ra, $sp, 12 # 4-byte Folded Spill
|
|
; LA32F-NEXT: bl %plt(rintf)
|
|
; LA32F-NEXT: ld.w $ra, $sp, 12 # 4-byte Folded Reload
|
|
; LA32F-NEXT: addi.w $sp, $sp, 16
|
|
; LA32F-NEXT: ret
|
|
;
|
|
; LA32D-LABEL: rint_f32:
|
|
; LA32D: # %bb.0: # %entry
|
|
; LA32D-NEXT: addi.w $sp, $sp, -16
|
|
; LA32D-NEXT: st.w $ra, $sp, 12 # 4-byte Folded Spill
|
|
; LA32D-NEXT: bl %plt(rintf)
|
|
; LA32D-NEXT: ld.w $ra, $sp, 12 # 4-byte Folded Reload
|
|
; LA32D-NEXT: addi.w $sp, $sp, 16
|
|
; LA32D-NEXT: ret
|
|
;
|
|
; LA64F-LABEL: rint_f32:
|
|
; LA64F: # %bb.0: # %entry
|
|
; LA64F-NEXT: frint.s $fa0, $fa0
|
|
; LA64F-NEXT: ret
|
|
;
|
|
; LA64D-LABEL: rint_f32:
|
|
; LA64D: # %bb.0: # %entry
|
|
; LA64D-NEXT: frint.s $fa0, $fa0
|
|
; LA64D-NEXT: ret
|
|
entry:
|
|
%0 = tail call float @llvm.rint.f32(float %f)
|
|
ret float %0
|
|
}
|
|
|
|
declare float @llvm.rint.f32(float)
|
|
|
|
define double @rint_f64(double %d) nounwind {
|
|
; LA32F-LABEL: rint_f64:
|
|
; LA32F: # %bb.0: # %entry
|
|
; LA32F-NEXT: addi.w $sp, $sp, -16
|
|
; LA32F-NEXT: st.w $ra, $sp, 12 # 4-byte Folded Spill
|
|
; LA32F-NEXT: bl %plt(rint)
|
|
; LA32F-NEXT: ld.w $ra, $sp, 12 # 4-byte Folded Reload
|
|
; LA32F-NEXT: addi.w $sp, $sp, 16
|
|
; LA32F-NEXT: ret
|
|
;
|
|
; LA32D-LABEL: rint_f64:
|
|
; LA32D: # %bb.0: # %entry
|
|
; LA32D-NEXT: addi.w $sp, $sp, -16
|
|
; LA32D-NEXT: st.w $ra, $sp, 12 # 4-byte Folded Spill
|
|
; LA32D-NEXT: bl %plt(rint)
|
|
; LA32D-NEXT: ld.w $ra, $sp, 12 # 4-byte Folded Reload
|
|
; LA32D-NEXT: addi.w $sp, $sp, 16
|
|
; LA32D-NEXT: ret
|
|
;
|
|
; LA64F-LABEL: rint_f64:
|
|
; LA64F: # %bb.0: # %entry
|
|
; LA64F-NEXT: addi.d $sp, $sp, -16
|
|
; LA64F-NEXT: st.d $ra, $sp, 8 # 8-byte Folded Spill
|
|
; LA64F-NEXT: bl %plt(rint)
|
|
; LA64F-NEXT: ld.d $ra, $sp, 8 # 8-byte Folded Reload
|
|
; LA64F-NEXT: addi.d $sp, $sp, 16
|
|
; LA64F-NEXT: ret
|
|
;
|
|
; LA64D-LABEL: rint_f64:
|
|
; LA64D: # %bb.0: # %entry
|
|
; LA64D-NEXT: frint.d $fa0, $fa0
|
|
; LA64D-NEXT: ret
|
|
entry:
|
|
%0 = tail call double @llvm.rint.f64(double %d)
|
|
ret double %0
|
|
}
|
|
|
|
declare double @llvm.rint.f64(double)
|