mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-05 13:09:10 +00:00
17ef00ea94
By default, LLVM uses the "C" calling convention for all runtime library functions. The half-precision FP conversion functions use the soft-float calling convention, and are needed for some targets which use the hard-float convention by default, so must have their calling convention explicitly set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215348 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
2.6 KiB
LLVM
85 lines
2.6 KiB
LLVM
; RUN: llc < %s | FileCheck %s
|
|
; RUN: llc -mattr=+vfp3,+fp16 < %s | FileCheck --check-prefix=CHECK-FP16 %s
|
|
; RUN: llc -mtriple=armv8-eabihf < %s | FileCheck --check-prefix=CHECK-ARMV8 %s
|
|
; RUN: llc -mtriple=thumbv7m-eabi < %s | FileCheck --check-prefix=CHECK-SOFTFLOAT %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32"
|
|
target triple = "armv7---eabihf"
|
|
|
|
@x = global i16 12902
|
|
@y = global i16 0
|
|
@z = common global i16 0
|
|
|
|
define void @foo() nounwind {
|
|
; CHECK-LABEL: foo:
|
|
; CHECK-FP16-LABEL: foo:
|
|
; CHECK-ARMV8-LABEL: foo:
|
|
; CHECK-SOFTFLOAT-LABEL: foo:
|
|
entry:
|
|
%0 = load i16* @x, align 2
|
|
%1 = load i16* @y, align 2
|
|
%2 = tail call float @llvm.convert.from.fp16.f32(i16 %0)
|
|
; CHECK: __gnu_h2f_ieee
|
|
; CHECK-FP16: vcvtb.f32.f16
|
|
; CHECK-ARMv8: vcvtb.f32.f16
|
|
; CHECK-SOFTFLOAT: __gnu_h2f_ieee
|
|
%3 = tail call float @llvm.convert.from.fp16.f32(i16 %1)
|
|
; CHECK: __gnu_h2f_ieee
|
|
; CHECK-FP16: vcvtb.f32.f16
|
|
; CHECK-ARMV8: vcvtb.f32.f16
|
|
; CHECK-SOFTFLOAT: __gnu_h2f_ieee
|
|
%4 = fadd float %2, %3
|
|
%5 = tail call i16 @llvm.convert.to.fp16.f32(float %4)
|
|
; CHECK: __gnu_f2h_ieee
|
|
; CHECK-FP16: vcvtb.f16.f32
|
|
; CHECK-ARMV8: vcvtb.f16.f32
|
|
; CHECK-SOFTFLOAT: __gnu_f2h_ieee
|
|
store i16 %5, i16* @x, align 2
|
|
ret void
|
|
}
|
|
|
|
define double @test_from_fp16(i16 %in) {
|
|
; CHECK-LABEL: test_from_fp16:
|
|
; CHECK-FP16-LABEL: test_from_fp16:
|
|
; CHECK-ARMV8-LABEL: test_from_fp16:
|
|
; CHECK-SOFTFLOAT-LABEL: test_from_fp16:
|
|
%val = call double @llvm.convert.from.fp16.f64(i16 %in)
|
|
; CHECK: bl __gnu_h2f_ieee
|
|
; CHECK: vmov [[TMP:s[0-9]+]], r0
|
|
; CHECK: vcvt.f64.f32 d0, [[TMP]]
|
|
|
|
; CHECK-FP16: vmov [[TMP16:s[0-9]+]], r0
|
|
; CHECK-FP16: vcvtb.f32.f16 [[TMP32:s[0-9]+]], [[TMP16]]
|
|
; CHECK-FP16: vcvt.f64.f32 d0, [[TMP32]]
|
|
|
|
; CHECK-ARMV8: vmov [[TMP:s[0-9]+]], r0
|
|
; CHECK-ARMV8: vcvtb.f64.f16 d0, [[TMP]]
|
|
|
|
; CHECK-SOFTFLOAT: bl __gnu_h2f_ieee
|
|
; CHECK-SOFTFLOAT: bl __aeabi_f2d
|
|
ret double %val
|
|
}
|
|
|
|
define i16 @test_to_fp16(double %in) {
|
|
; CHECK-LABEL: test_to_fp16:
|
|
; CHECK-FP16-LABEL: test_to_fp16:
|
|
; CHECK-ARMV8-LABEL: test_to_fp16:
|
|
; CHECK-SOFTFLOAT-LABEL: test_to_fp16:
|
|
%val = call i16 @llvm.convert.to.fp16.f64(double %in)
|
|
; CHECK: bl __aeabi_d2h
|
|
|
|
; CHECK-FP16: bl __aeabi_d2h
|
|
|
|
; CHECK-ARMV8: vcvtb.f16.f64 [[TMP:s[0-9]+]], d0
|
|
; CHECK-ARMV8: vmov r0, [[TMP]]
|
|
|
|
; CHECK-SOFTFLOAT: bl __aeabi_d2h
|
|
ret i16 %val
|
|
}
|
|
|
|
declare float @llvm.convert.from.fp16.f32(i16) nounwind readnone
|
|
declare double @llvm.convert.from.fp16.f64(i16) nounwind readnone
|
|
|
|
declare i16 @llvm.convert.to.fp16.f32(float) nounwind readnone
|
|
declare i16 @llvm.convert.to.fp16.f64(double) nounwind readnone
|