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https://github.com/RPCS3/llvm-mirror.git
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17ff9199a5
We already do the following combines: (bitcast int (and (bitcast fp X to int), 0x7fff...) to fp) -> fabs X (bitcast int (xor (bitcast fp X to int), 0x8000...) to fp) -> fneg X When the target has "bit preserving fp logic". This patch just extends it to also combine: (bitcast int (or (bitcast fp X to int), 0x8000...) to fp) -> fneg (fabs X) As some targets have fnabs and even those that don't can efficiently lower both the fabs and the fneg. Differential revision: https://reviews.llvm.org/D44548 llvm-svn: 344093
175 lines
5.0 KiB
LLVM
175 lines
5.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mcpu=pwr8 -mtriple=powerpc64le-unkknown-unknown \
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; RUN: -ppc-asm-full-reg-names -verify-machineinstrs -O2 < %s | FileCheck %s
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define float @absf(float %a) {
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; CHECK-LABEL: absf:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: fabs f1, f1
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast float %a to i32
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%and = and i32 %conv, 2147483647
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%conv1 = bitcast i32 %and to float
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ret float %conv1
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}
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define double @absd(double %a) {
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; CHECK-LABEL: absd:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xsabsdp f1, f1
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast double %a to i64
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%and = and i64 %conv, 9223372036854775807
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%conv1 = bitcast i64 %and to double
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ret double %conv1
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}
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define <4 x float> @absv4f32(<4 x float> %a) {
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; CHECK-LABEL: absv4f32:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvabssp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <4 x float> %a to <4 x i32>
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%and = and <4 x i32> %conv, <i32 2147483647, i32 2147483647, i32 2147483647, i32 2147483647>
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%conv1 = bitcast <4 x i32> %and to <4 x float>
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ret <4 x float> %conv1
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}
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define <4 x float> @absv4f32_wundef(<4 x float> %a) {
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; CHECK-LABEL: absv4f32_wundef:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvabssp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <4 x float> %a to <4 x i32>
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%and = and <4 x i32> %conv, <i32 2147483647, i32 undef, i32 undef, i32 2147483647>
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%conv1 = bitcast <4 x i32> %and to <4 x float>
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ret <4 x float> %conv1
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}
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define <4 x float> @absv4f32_invalid(<4 x float> %a) {
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; CHECK-LABEL: absv4f32_invalid:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: addis r3, r2, .LCPI4_0@toc@ha
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; CHECK-NEXT: addi r3, r3, .LCPI4_0@toc@l
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; CHECK-NEXT: lvx v3, 0, r3
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; CHECK-NEXT: xxland vs34, vs34, vs35
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <4 x float> %a to <4 x i32>
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%and = and <4 x i32> %conv, <i32 2147483646, i32 2147483647, i32 2147483647, i32 2147483647>
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%conv1 = bitcast <4 x i32> %and to <4 x float>
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ret <4 x float> %conv1
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}
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define <2 x double> @absv2f64(<2 x double> %a) {
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; CHECK-LABEL: absv2f64:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvabsdp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <2 x double> %a to <2 x i64>
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%and = and <2 x i64> %conv, <i64 9223372036854775807, i64 9223372036854775807>
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%conv1 = bitcast <2 x i64> %and to <2 x double>
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ret <2 x double> %conv1
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}
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define float @negf(float %a) {
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; CHECK-LABEL: negf:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: fneg f1, f1
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast float %a to i32
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%and = xor i32 %conv, -2147483648
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%conv1 = bitcast i32 %and to float
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ret float %conv1
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}
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define double @negd(double %a) {
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; CHECK-LABEL: negd:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xsnegdp f1, f1
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast double %a to i64
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%and = xor i64 %conv, -9223372036854775808
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%conv1 = bitcast i64 %and to double
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ret double %conv1
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}
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define <4 x float> @negv4f32(<4 x float> %a) {
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; CHECK-LABEL: negv4f32:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvnegsp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <4 x float> %a to <4 x i32>
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%and = xor <4 x i32> %conv, <i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648>
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%conv1 = bitcast <4 x i32> %and to <4 x float>
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ret <4 x float> %conv1
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}
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define <2 x double> @negv2d64(<2 x double> %a) {
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; CHECK-LABEL: negv2d64:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvnegdp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <2 x double> %a to <2 x i64>
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%and = xor <2 x i64> %conv, <i64 -9223372036854775808, i64 -9223372036854775808>
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%conv1 = bitcast <2 x i64> %and to <2 x double>
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ret <2 x double> %conv1
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}
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define float @nabsf(float %a) {
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; CHECK-LABEL: nabsf:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: fnabs f1, f1
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast float %a to i32
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%and = or i32 %conv, -2147483648
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%conv1 = bitcast i32 %and to float
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ret float %conv1
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}
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define double @nabsd(double %a) {
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; CHECK-LABEL: nabsd:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xsnabsdp f1, f1
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast double %a to i64
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%and = or i64 %conv, -9223372036854775808
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%conv1 = bitcast i64 %and to double
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ret double %conv1
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}
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define <4 x float> @nabsv4f32(<4 x float> %a) {
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; CHECK-LABEL: nabsv4f32:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvnabssp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <4 x float> %a to <4 x i32>
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%and = or <4 x i32> %conv, <i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648>
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%conv1 = bitcast <4 x i32> %and to <4 x float>
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ret <4 x float> %conv1
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}
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define <2 x double> @nabsv2d64(<2 x double> %a) {
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; CHECK-LABEL: nabsv2d64:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xvnabsdp vs34, vs34
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; CHECK-NEXT: blr
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entry:
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%conv = bitcast <2 x double> %a to <2 x i64>
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%and = or <2 x i64> %conv, <i64 -9223372036854775808, i64 -9223372036854775808>
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%conv1 = bitcast <2 x i64> %and to <2 x double>
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ret <2 x double> %conv1
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}
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