Make sure FABS on v2f32 and v4f32 is legal on ARM NEON

This fixes PR14359

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168200 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index f53d6642689eb2b345774ea9bd245822fd933720..3dd08d93bfa01b2bbd297aab2d3ccf13c60759ab 100644 (file)
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -505,7 +505,6 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
     setOperationAction(ISD::FNEARBYINT, MVT::v2f64, Expand);
     setOperationAction(ISD::FFLOOR, MVT::v2f64, Expand);
 
-    setOperationAction(ISD::FABS, MVT::v4f32, Expand);
     setOperationAction(ISD::FSQRT, MVT::v4f32, Expand);
     setOperationAction(ISD::FSIN, MVT::v4f32, Expand);
     setOperationAction(ISD::FCOS, MVT::v4f32, Expand);

diff --git a/lib/Target/ARM/ARMInstrNEON.td b/lib/Target/ARM/ARMInstrNEON.td
index 3cf213cbffee2de9f0ce029ae23f20f3132680a6..697a8d28c54da35ded22edaa26b90381d29c01b4 100644 (file)
--- a/lib/Target/ARM/ARMInstrNEON.td
+++ b/lib/Target/ARM/ARMInstrNEON.td
@@ -4877,12 +4877,15 @@ defm VSRI     : N2VShInsR_QHSD<1, 1, 0b0100, 1, "vsri">;
 defm VABS     : N2VInt_QHS<0b11, 0b11, 0b01, 0b00110, 0,
                            IIC_VUNAiD, IIC_VUNAiQ, "vabs", "s",
                            int_arm_neon_vabs>;
-def  VABSfd   : N2VDInt<0b11, 0b11, 0b10, 0b01, 0b01110, 0,
-                        IIC_VUNAD, "vabs", "f32",
-                        v2f32, v2f32, int_arm_neon_vabs>;
-def  VABSfq   : N2VQInt<0b11, 0b11, 0b10, 0b01, 0b01110, 0,
-                        IIC_VUNAQ, "vabs", "f32",
-                        v4f32, v4f32, int_arm_neon_vabs>;
+def  VABSfd   : N2VD<0b11, 0b11, 0b10, 0b01, 0b01110, 0,
+                     "vabs", "f32",
+                     v2f32, v2f32, fabs>;
+def  VABSfq   : N2VQ<0b11, 0b11, 0b10, 0b01, 0b01110, 0,
+                     "vabs", "f32",
+                      v4f32, v4f32, fabs>;
+
+def : Pat<(v2f32 (int_arm_neon_vabs (v2f32 DPR:$src))), (VABSfd DPR:$src)>;
+def : Pat<(v4f32 (int_arm_neon_vabs (v4f32 QPR:$src))), (VABSfq QPR:$src)>;
 
 //   VQABS    : Vector Saturating Absolute Value
 defm VQABS    : N2VInt_QHS<0b11, 0b11, 0b00, 0b01110, 0,

diff --git a/test/CodeGen/ARM/fabs-neon.ll b/test/CodeGen/ARM/fabs-neon.ll
new file mode 100644 (file)
index 0000000..614117f
--- /dev/null
+++ b/test/CodeGen/ARM/fabs-neon.ll
@@ -0,0 +1,17 @@
+; RUN: llc < %s -mtriple=armv7-eabi -float-abi=hard -mcpu=cortex-a8 | FileCheck %s
+
+; CHECK: test:
+; CHECK:         vabs.f32        q0, q0
+define <4 x float> @test(<4 x float> %a) {
+  %foo = call <4 x float> @llvm.fabs.v4f32(<4 x float> %a)
+  ret <4 x float> %foo
+}
+declare <4 x float> @llvm.fabs.v4f32(<4 x float> %a)
+
+; CHECK: test2:
+; CHECK:        vabs.f32        d0, d0
+define <2 x float> @test2(<2 x float> %a) {
+  %foo = call <2 x float> @llvm.fabs.v2f32(<2 x float> %a)
+    ret <2 x float> %foo
+}
+declare <2 x float> @llvm.fabs.v2f32(<2 x float> %a)