[llvm] r188895 - [SystemZ] Use FI[EDX]BRA for codegen
Richard Sandiford
rsandifo at linux.vnet.ibm.com
Wed Aug 21 02:04:20 PDT 2013
Author: rsandifo
Date: Wed Aug 21 04:04:20 2013
New Revision: 188895
URL: http://llvm.org/viewvc/llvm-project?rev=188895&view=rev
Log:
[SystemZ] Use FI[EDX]BRA for codegen
Added:
llvm/trunk/test/CodeGen/SystemZ/fp-round-02.ll
Modified:
llvm/trunk/lib/Target/SystemZ/SystemZISelLowering.cpp
llvm/trunk/lib/Target/SystemZ/SystemZInstrFP.td
llvm/trunk/test/CodeGen/SystemZ/fp-round-01.ll
Modified: llvm/trunk/lib/Target/SystemZ/SystemZISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/SystemZ/SystemZISelLowering.cpp?rev=188895&r1=188894&r2=188895&view=diff
==============================================================================
--- llvm/trunk/lib/Target/SystemZ/SystemZISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/SystemZ/SystemZISelLowering.cpp Wed Aug 21 04:04:20 2013
@@ -209,6 +209,15 @@ SystemZTargetLowering::SystemZTargetLowe
// We can use FI for FRINT.
setOperationAction(ISD::FRINT, VT, Legal);
+ // We can use the extended form of FI for other rounding operations.
+ if (Subtarget.hasFPExtension()) {
+ setOperationAction(ISD::FNEARBYINT, VT, Legal);
+ setOperationAction(ISD::FFLOOR, VT, Legal);
+ setOperationAction(ISD::FCEIL, VT, Legal);
+ setOperationAction(ISD::FTRUNC, VT, Legal);
+ setOperationAction(ISD::FROUND, VT, Legal);
+ }
+
// No special instructions for these.
setOperationAction(ISD::FSIN, VT, Expand);
setOperationAction(ISD::FCOS, VT, Expand);
Modified: llvm/trunk/lib/Target/SystemZ/SystemZInstrFP.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/SystemZ/SystemZInstrFP.td?rev=188895&r1=188894&r2=188895&view=diff
==============================================================================
--- llvm/trunk/lib/Target/SystemZ/SystemZInstrFP.td (original)
+++ llvm/trunk/lib/Target/SystemZ/SystemZInstrFP.td Wed Aug 21 04:04:20 2013
@@ -232,6 +232,36 @@ def : Pat<(frint FP32:$src), (FIEBR 0,
def : Pat<(frint FP64:$src), (FIDBR 0, FP64:$src)>;
def : Pat<(frint FP128:$src), (FIXBR 0, FP128:$src)>;
+let Predicates = [FeatureFPExtension] in {
+ // fnearbyint is like frint but does not detect inexact conditions.
+ def : Pat<(fnearbyint FP32:$src), (FIEBRA 0, FP32:$src, 4)>;
+ def : Pat<(fnearbyint FP64:$src), (FIDBRA 0, FP64:$src, 4)>;
+ def : Pat<(fnearbyint FP128:$src), (FIXBRA 0, FP128:$src, 4)>;
+
+ // floor is no longer allowed to raise an inexact condition,
+ // so restrict it to the cases where the condition can be suppressed.
+ // Mode 7 is round towards -inf.
+ def : Pat<(ffloor FP32:$src), (FIEBRA 7, FP32:$src, 4)>;
+ def : Pat<(ffloor FP64:$src), (FIDBRA 7, FP64:$src, 4)>;
+ def : Pat<(ffloor FP128:$src), (FIXBRA 7, FP128:$src, 4)>;
+
+ // Same idea for ceil, where mode 6 is round towards +inf.
+ def : Pat<(fceil FP32:$src), (FIEBRA 6, FP32:$src, 4)>;
+ def : Pat<(fceil FP64:$src), (FIDBRA 6, FP64:$src, 4)>;
+ def : Pat<(fceil FP128:$src), (FIXBRA 6, FP128:$src, 4)>;
+
+ // Same idea for trunc, where mode 5 is round towards zero.
+ def : Pat<(ftrunc FP32:$src), (FIEBRA 5, FP32:$src, 4)>;
+ def : Pat<(ftrunc FP64:$src), (FIDBRA 5, FP64:$src, 4)>;
+ def : Pat<(ftrunc FP128:$src), (FIXBRA 5, FP128:$src, 4)>;
+
+ // Same idea for round, where mode 1 is round towards nearest with
+ // ties away from zero.
+ def : Pat<(frnd FP32:$src), (FIEBRA 1, FP32:$src, 4)>;
+ def : Pat<(frnd FP64:$src), (FIDBRA 1, FP64:$src, 4)>;
+ def : Pat<(frnd FP128:$src), (FIXBRA 1, FP128:$src, 4)>;
+}
+
//===----------------------------------------------------------------------===//
// Binary arithmetic
//===----------------------------------------------------------------------===//
Modified: llvm/trunk/test/CodeGen/SystemZ/fp-round-01.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/SystemZ/fp-round-01.ll?rev=188895&r1=188894&r2=188895&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/SystemZ/fp-round-01.ll (original)
+++ llvm/trunk/test/CodeGen/SystemZ/fp-round-01.ll Wed Aug 21 04:04:20 2013
@@ -1,9 +1,8 @@
-; Test rint()-like rounding, with non-integer values triggering an
-; inexact condition.
+; Test rounding functions for z10.
;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
-; Test f32.
+; Test rint for f32.
declare float @llvm.rint.f32(float %f)
define float @f1(float %f) {
; CHECK-LABEL: f1:
@@ -13,7 +12,7 @@ define float @f1(float %f) {
ret float %res
}
-; Test f64.
+; Test rint for f64.
declare double @llvm.rint.f64(double %f)
define double @f2(double %f) {
; CHECK-LABEL: f2:
@@ -23,7 +22,7 @@ define double @f2(double %f) {
ret double %res
}
-; Test f128.
+; Test rint for f128.
declare fp128 @llvm.rint.f128(fp128 %f)
define void @f3(fp128 *%ptr) {
; CHECK-LABEL: f3:
@@ -34,3 +33,118 @@ define void @f3(fp128 *%ptr) {
store fp128 %res, fp128 *%ptr
ret void
}
+
+; Test nearbyint for f32.
+declare float @llvm.nearbyint.f32(float %f)
+define float @f4(float %f) {
+; CHECK-LABEL: f4:
+; CHECK: brasl %r14, nearbyintf at PLT
+; CHECK: br %r14
+ %res = call float @llvm.nearbyint.f32(float %f)
+ ret float %res
+}
+
+; Test nearbyint for f64.
+declare double @llvm.nearbyint.f64(double %f)
+define double @f5(double %f) {
+; CHECK-LABEL: f5:
+; CHECK: brasl %r14, nearbyint at PLT
+; CHECK: br %r14
+ %res = call double @llvm.nearbyint.f64(double %f)
+ ret double %res
+}
+
+; Test nearbyint for f128: omitted for now because we cannot handle
+; indirect arguments.
+
+; Test floor for f32.
+declare float @llvm.floor.f32(float %f)
+define float @f7(float %f) {
+; CHECK-LABEL: f7:
+; CHECK: brasl %r14, floorf at PLT
+; CHECK: br %r14
+ %res = call float @llvm.floor.f32(float %f)
+ ret float %res
+}
+
+; Test floor for f64.
+declare double @llvm.floor.f64(double %f)
+define double @f8(double %f) {
+; CHECK-LABEL: f8:
+; CHECK: brasl %r14, floor at PLT
+; CHECK: br %r14
+ %res = call double @llvm.floor.f64(double %f)
+ ret double %res
+}
+
+; Test floor for f128: omitted for now because we cannot handle
+; indirect arguments.
+
+; Test ceil for f32.
+declare float @llvm.ceil.f32(float %f)
+define float @f10(float %f) {
+; CHECK-LABEL: f10:
+; CHECK: brasl %r14, ceilf at PLT
+; CHECK: br %r14
+ %res = call float @llvm.ceil.f32(float %f)
+ ret float %res
+}
+
+; Test ceil for f64.
+declare double @llvm.ceil.f64(double %f)
+define double @f11(double %f) {
+; CHECK-LABEL: f11:
+; CHECK: brasl %r14, ceil at PLT
+; CHECK: br %r14
+ %res = call double @llvm.ceil.f64(double %f)
+ ret double %res
+}
+
+; Test ceil for f128: omitted for now because we cannot handle
+; indirect arguments.
+
+; Test trunc for f32.
+declare float @llvm.trunc.f32(float %f)
+define float @f13(float %f) {
+; CHECK-LABEL: f13:
+; CHECK: brasl %r14, truncf at PLT
+; CHECK: br %r14
+ %res = call float @llvm.trunc.f32(float %f)
+ ret float %res
+}
+
+; Test trunc for f64.
+declare double @llvm.trunc.f64(double %f)
+define double @f14(double %f) {
+; CHECK-LABEL: f14:
+; CHECK: brasl %r14, trunc at PLT
+; CHECK: br %r14
+ %res = call double @llvm.trunc.f64(double %f)
+ ret double %res
+}
+
+; Test trunc for f128: omitted for now because we cannot handle
+; indirect arguments.
+
+; Test round for f32.
+declare float @llvm.round.f32(float %f)
+define float @f16(float %f) {
+; CHECK-LABEL: f16:
+; CHECK: brasl %r14, roundf at PLT
+; CHECK: br %r14
+ %res = call float @llvm.round.f32(float %f)
+ ret float %res
+}
+
+; Test round for f64.
+declare double @llvm.round.f64(double %f)
+define double @f17(double %f) {
+; CHECK-LABEL: f17:
+; CHECK: brasl %r14, round at PLT
+; CHECK: br %r14
+ %res = call double @llvm.round.f64(double %f)
+ ret double %res
+}
+
+; Test round for f128: omitted for now because we cannot handle
+; indirect arguments.
Added: llvm/trunk/test/CodeGen/SystemZ/fp-round-02.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/SystemZ/fp-round-02.ll?rev=188895&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/SystemZ/fp-round-02.ll (added)
+++ llvm/trunk/test/CodeGen/SystemZ/fp-round-02.ll Wed Aug 21 04:04:20 2013
@@ -0,0 +1,195 @@
+; Test rounding functions for z196 and above.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
+
+; Test rint for f32.
+declare float @llvm.rint.f32(float %f)
+define float @f1(float %f) {
+; CHECK-LABEL: f1:
+; CHECK: fiebr %f0, 0, %f0
+; CHECK: br %r14
+ %res = call float @llvm.rint.f32(float %f)
+ ret float %res
+}
+
+; Test rint for f64.
+declare double @llvm.rint.f64(double %f)
+define double @f2(double %f) {
+; CHECK-LABEL: f2:
+; CHECK: fidbr %f0, 0, %f0
+; CHECK: br %r14
+ %res = call double @llvm.rint.f64(double %f)
+ ret double %res
+}
+
+; Test rint for f128.
+declare fp128 @llvm.rint.f128(fp128 %f)
+define void @f3(fp128 *%ptr) {
+; CHECK-LABEL: f3:
+; CHECK: fixbr %f0, 0, %f0
+; CHECK: br %r14
+ %src = load fp128 *%ptr
+ %res = call fp128 @llvm.rint.f128(fp128 %src)
+ store fp128 %res, fp128 *%ptr
+ ret void
+}
+
+; Test nearbyint for f32.
+declare float @llvm.nearbyint.f32(float %f)
+define float @f4(float %f) {
+; CHECK-LABEL: f4:
+; CHECK: fiebra %f0, 0, %f0, 4
+; CHECK: br %r14
+ %res = call float @llvm.nearbyint.f32(float %f)
+ ret float %res
+}
+
+; Test nearbyint for f64.
+declare double @llvm.nearbyint.f64(double %f)
+define double @f5(double %f) {
+; CHECK-LABEL: f5:
+; CHECK: fidbra %f0, 0, %f0, 4
+; CHECK: br %r14
+ %res = call double @llvm.nearbyint.f64(double %f)
+ ret double %res
+}
+
+; Test nearbyint for f128.
+declare fp128 @llvm.nearbyint.f128(fp128 %f)
+define void @f6(fp128 *%ptr) {
+; CHECK-LABEL: f6:
+; CHECK: fixbra %f0, 0, %f0, 4
+; CHECK: br %r14
+ %src = load fp128 *%ptr
+ %res = call fp128 @llvm.nearbyint.f128(fp128 %src)
+ store fp128 %res, fp128 *%ptr
+ ret void
+}
+
+; Test floor for f32.
+declare float @llvm.floor.f32(float %f)
+define float @f7(float %f) {
+; CHECK-LABEL: f7:
+; CHECK: fiebra %f0, 7, %f0, 4
+; CHECK: br %r14
+ %res = call float @llvm.floor.f32(float %f)
+ ret float %res
+}
+
+; Test floor for f64.
+declare double @llvm.floor.f64(double %f)
+define double @f8(double %f) {
+; CHECK-LABEL: f8:
+; CHECK: fidbra %f0, 7, %f0, 4
+; CHECK: br %r14
+ %res = call double @llvm.floor.f64(double %f)
+ ret double %res
+}
+
+; Test floor for f128.
+declare fp128 @llvm.floor.f128(fp128 %f)
+define void @f9(fp128 *%ptr) {
+; CHECK-LABEL: f9:
+; CHECK: fixbra %f0, 7, %f0, 4
+; CHECK: br %r14
+ %src = load fp128 *%ptr
+ %res = call fp128 @llvm.floor.f128(fp128 %src)
+ store fp128 %res, fp128 *%ptr
+ ret void
+}
+
+; Test ceil for f32.
+declare float @llvm.ceil.f32(float %f)
+define float @f10(float %f) {
+; CHECK-LABEL: f10:
+; CHECK: fiebra %f0, 6, %f0, 4
+; CHECK: br %r14
+ %res = call float @llvm.ceil.f32(float %f)
+ ret float %res
+}
+
+; Test ceil for f64.
+declare double @llvm.ceil.f64(double %f)
+define double @f11(double %f) {
+; CHECK-LABEL: f11:
+; CHECK: fidbra %f0, 6, %f0, 4
+; CHECK: br %r14
+ %res = call double @llvm.ceil.f64(double %f)
+ ret double %res
+}
+
+; Test ceil for f128.
+declare fp128 @llvm.ceil.f128(fp128 %f)
+define void @f12(fp128 *%ptr) {
+; CHECK-LABEL: f12:
+; CHECK: fixbra %f0, 6, %f0, 4
+; CHECK: br %r14
+ %src = load fp128 *%ptr
+ %res = call fp128 @llvm.ceil.f128(fp128 %src)
+ store fp128 %res, fp128 *%ptr
+ ret void
+}
+
+; Test trunc for f32.
+declare float @llvm.trunc.f32(float %f)
+define float @f13(float %f) {
+; CHECK-LABEL: f13:
+; CHECK: fiebra %f0, 5, %f0, 4
+; CHECK: br %r14
+ %res = call float @llvm.trunc.f32(float %f)
+ ret float %res
+}
+
+; Test trunc for f64.
+declare double @llvm.trunc.f64(double %f)
+define double @f14(double %f) {
+; CHECK-LABEL: f14:
+; CHECK: fidbra %f0, 5, %f0, 4
+; CHECK: br %r14
+ %res = call double @llvm.trunc.f64(double %f)
+ ret double %res
+}
+
+; Test trunc for f128.
+declare fp128 @llvm.trunc.f128(fp128 %f)
+define void @f15(fp128 *%ptr) {
+; CHECK-LABEL: f15:
+; CHECK: fixbra %f0, 5, %f0, 4
+; CHECK: br %r14
+ %src = load fp128 *%ptr
+ %res = call fp128 @llvm.trunc.f128(fp128 %src)
+ store fp128 %res, fp128 *%ptr
+ ret void
+}
+
+; Test round for f32.
+declare float @llvm.round.f32(float %f)
+define float @f16(float %f) {
+; CHECK-LABEL: f16:
+; CHECK: fiebra %f0, 1, %f0, 4
+; CHECK: br %r14
+ %res = call float @llvm.round.f32(float %f)
+ ret float %res
+}
+
+; Test round for f64.
+declare double @llvm.round.f64(double %f)
+define double @f17(double %f) {
+; CHECK-LABEL: f17:
+; CHECK: fidbra %f0, 1, %f0, 4
+; CHECK: br %r14
+ %res = call double @llvm.round.f64(double %f)
+ ret double %res
+}
+
+; Test round for f128.
+declare fp128 @llvm.round.f128(fp128 %f)
+define void @f18(fp128 *%ptr) {
+; CHECK-LABEL: f18:
+; CHECK: fixbra %f0, 1, %f0, 4
+; CHECK: br %r14
+ %src = load fp128 *%ptr
+ %res = call fp128 @llvm.round.f128(fp128 %src)
+ store fp128 %res, fp128 *%ptr
+ ret void
+}
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