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https://github.com/c64scene-ar/llvm-6502.git
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[SystemZ] Use FI[EDX]BRA for codegen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188895 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Sandiford
parent
d954716e75
commit
d95865a2a2
@ -209,6 +209,15 @@ SystemZTargetLowering::SystemZTargetLowering(SystemZTargetMachine &tm)
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// We can use FI for FRINT.
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setOperationAction(ISD::FRINT, VT, Legal);
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// We can use the extended form of FI for other rounding operations.
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if (Subtarget.hasFPExtension()) {
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setOperationAction(ISD::FNEARBYINT, VT, Legal);
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setOperationAction(ISD::FFLOOR, VT, Legal);
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setOperationAction(ISD::FCEIL, VT, Legal);
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setOperationAction(ISD::FTRUNC, VT, Legal);
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setOperationAction(ISD::FROUND, VT, Legal);
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}
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// No special instructions for these.
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setOperationAction(ISD::FSIN, VT, Expand);
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setOperationAction(ISD::FCOS, VT, Expand);
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@ -232,6 +232,36 @@ def : Pat<(frint FP32:$src), (FIEBR 0, FP32:$src)>;
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def : Pat<(frint FP64:$src), (FIDBR 0, FP64:$src)>;
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def : Pat<(frint FP128:$src), (FIXBR 0, FP128:$src)>;
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let Predicates = [FeatureFPExtension] in {
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// fnearbyint is like frint but does not detect inexact conditions.
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def : Pat<(fnearbyint FP32:$src), (FIEBRA 0, FP32:$src, 4)>;
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def : Pat<(fnearbyint FP64:$src), (FIDBRA 0, FP64:$src, 4)>;
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def : Pat<(fnearbyint FP128:$src), (FIXBRA 0, FP128:$src, 4)>;
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// floor is no longer allowed to raise an inexact condition,
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// so restrict it to the cases where the condition can be suppressed.
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// Mode 7 is round towards -inf.
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def : Pat<(ffloor FP32:$src), (FIEBRA 7, FP32:$src, 4)>;
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def : Pat<(ffloor FP64:$src), (FIDBRA 7, FP64:$src, 4)>;
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def : Pat<(ffloor FP128:$src), (FIXBRA 7, FP128:$src, 4)>;
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// Same idea for ceil, where mode 6 is round towards +inf.
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def : Pat<(fceil FP32:$src), (FIEBRA 6, FP32:$src, 4)>;
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def : Pat<(fceil FP64:$src), (FIDBRA 6, FP64:$src, 4)>;
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def : Pat<(fceil FP128:$src), (FIXBRA 6, FP128:$src, 4)>;
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// Same idea for trunc, where mode 5 is round towards zero.
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def : Pat<(ftrunc FP32:$src), (FIEBRA 5, FP32:$src, 4)>;
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def : Pat<(ftrunc FP64:$src), (FIDBRA 5, FP64:$src, 4)>;
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def : Pat<(ftrunc FP128:$src), (FIXBRA 5, FP128:$src, 4)>;
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// Same idea for round, where mode 1 is round towards nearest with
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// ties away from zero.
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def : Pat<(frnd FP32:$src), (FIEBRA 1, FP32:$src, 4)>;
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def : Pat<(frnd FP64:$src), (FIDBRA 1, FP64:$src, 4)>;
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def : Pat<(frnd FP128:$src), (FIXBRA 1, FP128:$src, 4)>;
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}
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//===----------------------------------------------------------------------===//
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// Binary arithmetic
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//===----------------------------------------------------------------------===//
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@ -1,9 +1,8 @@
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; Test rint()-like rounding, with non-integer values triggering an
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; inexact condition.
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; Test rounding functions for z10.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
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; Test f32.
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; Test rint for f32.
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declare float @llvm.rint.f32(float %f)
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define float @f1(float %f) {
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; CHECK-LABEL: f1:
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@ -13,7 +12,7 @@ define float @f1(float %f) {
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ret float %res
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}
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; Test f64.
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; Test rint for f64.
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declare double @llvm.rint.f64(double %f)
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define double @f2(double %f) {
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; CHECK-LABEL: f2:
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@ -23,7 +22,7 @@ define double @f2(double %f) {
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ret double %res
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}
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; Test f128.
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; Test rint for f128.
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declare fp128 @llvm.rint.f128(fp128 %f)
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define void @f3(fp128 *%ptr) {
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; CHECK-LABEL: f3:
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@ -34,3 +33,118 @@ define void @f3(fp128 *%ptr) {
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store fp128 %res, fp128 *%ptr
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ret void
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}
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; Test nearbyint for f32.
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declare float @llvm.nearbyint.f32(float %f)
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define float @f4(float %f) {
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; CHECK-LABEL: f4:
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; CHECK: brasl %r14, nearbyintf@PLT
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; CHECK: br %r14
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%res = call float @llvm.nearbyint.f32(float %f)
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ret float %res
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}
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; Test nearbyint for f64.
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declare double @llvm.nearbyint.f64(double %f)
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define double @f5(double %f) {
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; CHECK-LABEL: f5:
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; CHECK: brasl %r14, nearbyint@PLT
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; CHECK: br %r14
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%res = call double @llvm.nearbyint.f64(double %f)
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ret double %res
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}
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; Test nearbyint for f128: omitted for now because we cannot handle
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; indirect arguments.
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; Test floor for f32.
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declare float @llvm.floor.f32(float %f)
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define float @f7(float %f) {
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; CHECK-LABEL: f7:
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; CHECK: brasl %r14, floorf@PLT
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; CHECK: br %r14
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%res = call float @llvm.floor.f32(float %f)
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ret float %res
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}
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; Test floor for f64.
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declare double @llvm.floor.f64(double %f)
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define double @f8(double %f) {
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; CHECK-LABEL: f8:
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; CHECK: brasl %r14, floor@PLT
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; CHECK: br %r14
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%res = call double @llvm.floor.f64(double %f)
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ret double %res
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}
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; Test floor for f128: omitted for now because we cannot handle
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; indirect arguments.
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; Test ceil for f32.
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declare float @llvm.ceil.f32(float %f)
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define float @f10(float %f) {
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; CHECK-LABEL: f10:
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; CHECK: brasl %r14, ceilf@PLT
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; CHECK: br %r14
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%res = call float @llvm.ceil.f32(float %f)
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ret float %res
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}
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; Test ceil for f64.
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declare double @llvm.ceil.f64(double %f)
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define double @f11(double %f) {
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; CHECK-LABEL: f11:
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; CHECK: brasl %r14, ceil@PLT
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; CHECK: br %r14
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%res = call double @llvm.ceil.f64(double %f)
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ret double %res
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}
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; Test ceil for f128: omitted for now because we cannot handle
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; indirect arguments.
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; Test trunc for f32.
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declare float @llvm.trunc.f32(float %f)
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define float @f13(float %f) {
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; CHECK-LABEL: f13:
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; CHECK: brasl %r14, truncf@PLT
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; CHECK: br %r14
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%res = call float @llvm.trunc.f32(float %f)
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ret float %res
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}
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; Test trunc for f64.
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declare double @llvm.trunc.f64(double %f)
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define double @f14(double %f) {
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; CHECK-LABEL: f14:
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; CHECK: brasl %r14, trunc@PLT
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; CHECK: br %r14
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%res = call double @llvm.trunc.f64(double %f)
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ret double %res
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}
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; Test trunc for f128: omitted for now because we cannot handle
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; indirect arguments.
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; Test round for f32.
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declare float @llvm.round.f32(float %f)
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define float @f16(float %f) {
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; CHECK-LABEL: f16:
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; CHECK: brasl %r14, roundf@PLT
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; CHECK: br %r14
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%res = call float @llvm.round.f32(float %f)
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ret float %res
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}
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; Test round for f64.
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declare double @llvm.round.f64(double %f)
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define double @f17(double %f) {
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; CHECK-LABEL: f17:
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; CHECK: brasl %r14, round@PLT
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; CHECK: br %r14
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%res = call double @llvm.round.f64(double %f)
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ret double %res
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}
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; Test round for f128: omitted for now because we cannot handle
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; indirect arguments.
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195
test/CodeGen/SystemZ/fp-round-02.ll
Normal file
195
test/CodeGen/SystemZ/fp-round-02.ll
Normal file
@ -0,0 +1,195 @@
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; Test rounding functions for z196 and above.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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; Test rint for f32.
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declare float @llvm.rint.f32(float %f)
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define float @f1(float %f) {
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; CHECK-LABEL: f1:
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; CHECK: fiebr %f0, 0, %f0
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; CHECK: br %r14
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%res = call float @llvm.rint.f32(float %f)
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ret float %res
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}
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; Test rint for f64.
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declare double @llvm.rint.f64(double %f)
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define double @f2(double %f) {
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; CHECK-LABEL: f2:
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; CHECK: fidbr %f0, 0, %f0
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; CHECK: br %r14
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%res = call double @llvm.rint.f64(double %f)
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ret double %res
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}
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; Test rint for f128.
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declare fp128 @llvm.rint.f128(fp128 %f)
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define void @f3(fp128 *%ptr) {
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; CHECK-LABEL: f3:
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; CHECK: fixbr %f0, 0, %f0
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; CHECK: br %r14
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%src = load fp128 *%ptr
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%res = call fp128 @llvm.rint.f128(fp128 %src)
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store fp128 %res, fp128 *%ptr
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ret void
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}
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; Test nearbyint for f32.
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declare float @llvm.nearbyint.f32(float %f)
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define float @f4(float %f) {
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; CHECK-LABEL: f4:
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; CHECK: fiebra %f0, 0, %f0, 4
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; CHECK: br %r14
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%res = call float @llvm.nearbyint.f32(float %f)
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ret float %res
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}
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; Test nearbyint for f64.
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declare double @llvm.nearbyint.f64(double %f)
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define double @f5(double %f) {
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; CHECK-LABEL: f5:
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; CHECK: fidbra %f0, 0, %f0, 4
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; CHECK: br %r14
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%res = call double @llvm.nearbyint.f64(double %f)
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ret double %res
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}
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; Test nearbyint for f128.
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declare fp128 @llvm.nearbyint.f128(fp128 %f)
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define void @f6(fp128 *%ptr) {
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; CHECK-LABEL: f6:
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; CHECK: fixbra %f0, 0, %f0, 4
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; CHECK: br %r14
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%src = load fp128 *%ptr
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%res = call fp128 @llvm.nearbyint.f128(fp128 %src)
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store fp128 %res, fp128 *%ptr
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ret void
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}
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; Test floor for f32.
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declare float @llvm.floor.f32(float %f)
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define float @f7(float %f) {
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; CHECK-LABEL: f7:
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; CHECK: fiebra %f0, 7, %f0, 4
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; CHECK: br %r14
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%res = call float @llvm.floor.f32(float %f)
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ret float %res
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}
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; Test floor for f64.
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declare double @llvm.floor.f64(double %f)
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define double @f8(double %f) {
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; CHECK-LABEL: f8:
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; CHECK: fidbra %f0, 7, %f0, 4
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; CHECK: br %r14
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%res = call double @llvm.floor.f64(double %f)
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ret double %res
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}
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; Test floor for f128.
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declare fp128 @llvm.floor.f128(fp128 %f)
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define void @f9(fp128 *%ptr) {
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; CHECK-LABEL: f9:
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; CHECK: fixbra %f0, 7, %f0, 4
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; CHECK: br %r14
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%src = load fp128 *%ptr
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%res = call fp128 @llvm.floor.f128(fp128 %src)
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store fp128 %res, fp128 *%ptr
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ret void
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}
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; Test ceil for f32.
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declare float @llvm.ceil.f32(float %f)
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define float @f10(float %f) {
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; CHECK-LABEL: f10:
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; CHECK: fiebra %f0, 6, %f0, 4
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; CHECK: br %r14
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%res = call float @llvm.ceil.f32(float %f)
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ret float %res
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}
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; Test ceil for f64.
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declare double @llvm.ceil.f64(double %f)
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define double @f11(double %f) {
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; CHECK-LABEL: f11:
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; CHECK: fidbra %f0, 6, %f0, 4
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; CHECK: br %r14
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%res = call double @llvm.ceil.f64(double %f)
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ret double %res
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}
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; Test ceil for f128.
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declare fp128 @llvm.ceil.f128(fp128 %f)
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define void @f12(fp128 *%ptr) {
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; CHECK-LABEL: f12:
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; CHECK: fixbra %f0, 6, %f0, 4
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; CHECK: br %r14
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%src = load fp128 *%ptr
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%res = call fp128 @llvm.ceil.f128(fp128 %src)
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store fp128 %res, fp128 *%ptr
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ret void
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}
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; Test trunc for f32.
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declare float @llvm.trunc.f32(float %f)
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define float @f13(float %f) {
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; CHECK-LABEL: f13:
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; CHECK: fiebra %f0, 5, %f0, 4
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; CHECK: br %r14
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%res = call float @llvm.trunc.f32(float %f)
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ret float %res
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}
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; Test trunc for f64.
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declare double @llvm.trunc.f64(double %f)
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define double @f14(double %f) {
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; CHECK-LABEL: f14:
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; CHECK: fidbra %f0, 5, %f0, 4
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; CHECK: br %r14
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%res = call double @llvm.trunc.f64(double %f)
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ret double %res
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}
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; Test trunc for f128.
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declare fp128 @llvm.trunc.f128(fp128 %f)
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define void @f15(fp128 *%ptr) {
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; CHECK-LABEL: f15:
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; CHECK: fixbra %f0, 5, %f0, 4
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; CHECK: br %r14
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%src = load fp128 *%ptr
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%res = call fp128 @llvm.trunc.f128(fp128 %src)
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store fp128 %res, fp128 *%ptr
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ret void
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}
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; Test round for f32.
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declare float @llvm.round.f32(float %f)
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define float @f16(float %f) {
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; CHECK-LABEL: f16:
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; CHECK: fiebra %f0, 1, %f0, 4
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; CHECK: br %r14
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%res = call float @llvm.round.f32(float %f)
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ret float %res
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}
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; Test round for f64.
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declare double @llvm.round.f64(double %f)
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define double @f17(double %f) {
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; CHECK-LABEL: f17:
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; CHECK: fidbra %f0, 1, %f0, 4
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; CHECK: br %r14
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%res = call double @llvm.round.f64(double %f)
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ret double %res
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}
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; Test round for f128.
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declare fp128 @llvm.round.f128(fp128 %f)
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define void @f18(fp128 *%ptr) {
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; CHECK-LABEL: f18:
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; CHECK: fixbra %f0, 1, %f0, 4
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; CHECK: br %r14
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%src = load fp128 *%ptr
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%res = call fp128 @llvm.round.f128(fp128 %src)
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store fp128 %res, fp128 *%ptr
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ret void
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}
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