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[Power9] [LLVM] Add __float128 exponent GET and SET builtins 

Added

__builtin_vsx_scalar_extract_expq
__builtin_vsx_scalar_insert_exp_qp

Builtins should behave the same way as in GCC.

Differential Revision: https://reviews.llvm.org/D48185

llvm-svn: 342910
This commit is contained in:
Stefan Pintilie 2018-09-24 18:14:13 +00:00
parent 0181e7a6bd
commit b5305771fb
3 changed files with 49 additions and 0 deletions
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6
llvm/include/llvm/IR/IntrinsicsPowerPC.td
View File

@ -83,6 +83,12 @@ let TargetPrefix = "ppc" in { // All intrinsics start with "llvm.ppc.".
def int_ppc_fmaf128_round_to_odd
: GCCBuiltin<"__builtin_fmaf128_round_to_odd">,
Intrinsic <[llvm_f128_ty], [llvm_f128_ty,llvm_f128_ty,llvm_f128_ty], [IntrNoMem]>;
def int_ppc_scalar_extract_expq
: GCCBuiltin<"__builtin_vsx_scalar_extract_expq">,
Intrinsic <[llvm_i64_ty], [llvm_f128_ty], [IntrNoMem]>;
def int_ppc_scalar_insert_exp_qp
: GCCBuiltin<"__builtin_vsx_scalar_insert_exp_qp">,
Intrinsic <[llvm_f128_ty], [llvm_f128_ty, llvm_i64_ty], [IntrNoMem]>;
}

7
llvm/lib/Target/PowerPC/PPCInstrVSX.td
View File

@ -2671,6 +2671,9 @@ let AddedComplexity = 400, Predicates = [HasP9Vector] in {
def XSIEXPQP : XForm_18<63, 868, (outs vrrc:$vT), (ins vrrc:$vA, vsfrc:$vB),
"xsiexpqp $vT, $vA, $vB", IIC_VecFP, []>;
def : Pat<(f128 (int_ppc_scalar_insert_exp_qp f128:$vA, i64:$vB)),
(f128 (XSIEXPQP $vA, (MTVSRD $vB)))>;
// Extract Exponent/Significand DP/QP
def XSXEXPDP : XX2_RT5_XO5_XB6<60, 0, 347, "xsxexpdp", []>;
def XSXSIGDP : XX2_RT5_XO5_XB6<60, 1, 347, "xsxsigdp", []>;
@ -2678,6 +2681,10 @@ let AddedComplexity = 400, Predicates = [HasP9Vector] in {
def XSXEXPQP : X_VT5_XO5_VB5 <63, 2, 804, "xsxexpqp", []>;
def XSXSIGQP : X_VT5_XO5_VB5 <63, 18, 804, "xsxsigqp", []>;
def : Pat<(i64 (int_ppc_scalar_extract_expq f128:$vA)),
(i64 (MFVSRD (EXTRACT_SUBREG
(v2i64 (XSXEXPQP $vA)), sub_64)))>;
// Vector Insert Word
let UseVSXReg = 1 in {
// XB NOTE: Only XB.dword[1] is used, but we use vsrc on XB.

36
llvm/test/CodeGen/PowerPC/builtins-ppc-p9-f128.ll
View File

@ -101,3 +101,39 @@ entry:
}
declare double @llvm.ppc.truncf128.round.to.odd(fp128)
; Function Attrs: noinline nounwind optnone
define fp128 @insert_exp_qp(i64 %b) {
entry:
%b.addr = alloca i64, align 8
store i64 %b, i64* %b.addr, align 8
%0 = load fp128, fp128* @A, align 16
%1 = load i64, i64* %b.addr, align 8
%2 = call fp128 @llvm.ppc.scalar.insert.exp.qp(fp128 %0, i64 %1)
ret fp128 %2
; CHECK-LABEL: insert_exp_qp
; CHECK: mtvsrd [[FPREG:f[0-9]+]], r3
; CHECK: lxvx [[VECREG:v[0-9]+]]
; CHECK: xsiexpqp v2, [[VECREG]], [[FPREG]]
; CHECK: blr
}
; Function Attrs: nounwind readnone
declare fp128 @llvm.ppc.scalar.insert.exp.qp(fp128, i64)
; Function Attrs: noinline nounwind optnone
define i64 @extract_exp() {
entry:
%0 = load fp128, fp128* @A, align 16
%1 = call i64 @llvm.ppc.scalar.extract.expq(fp128 %0)
ret i64 %1
; CHECK-LABEL: extract_exp
; CHECK: lxvx [[VECIN:v[0-9]+]]
; CHECK: xsxexpqp [[VECOUT:v[0-9]+]], [[VECIN]]
; CHECK: mfvsrd r3, [[VECOUT]]
; CHECK: blr
}
; Function Attrs: nounwind readnone
declare i64 @llvm.ppc.scalar.extract.expq(fp128)