Merging r195803:

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r195803 | mcrosier | 2013-11-26 17:45:58 -0800 (Tue, 26 Nov 2013) | 1 line

[AArch64] Add support for NEON scalar floating-point absolute difference.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@195994 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 59 insertions, 0 deletions

diff --git a/test/CodeGen/AArch64/neon-scalar-fabd.ll b/test/CodeGen/AArch64/neon-scalar-fabd.ll
new file mode 100644
index 0000000..75686d3
--- /dev/null
+++ b/test/CodeGen/AArch64/neon-scalar-fabd.ll
@@ -0,0 +1,26 @@
+; RUN: llc < %s -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -mattr=+neon | FileCheck %s
+
+define float @test_vabds_f32(float %a, float %b) {
+; CHECK-LABEL: test_vabds_f32
+; CHECK: fabd {{s[0-9]+}}, {{s[0-9]+}}, {{s[0-9]+}}
+entry:
+  %vabd.i = insertelement <1 x float> undef, float %a, i32 0
+  %vabd1.i = insertelement <1 x float> undef, float %b, i32 0
+  %vabd2.i = call <1 x float> @llvm.aarch64.neon.vabd.v1f32(<1 x float> %vabd.i, <1 x float> %vabd1.i)
+  %0 = extractelement <1 x float> %vabd2.i, i32 0
+  ret float %0
+}
+
+define double @test_vabdd_f64(double %a, double %b) {
+; CHECK-LABEL: test_vabdd_f64
+; CHECK: fabd {{d[0-9]+}}, {{d[0-9]+}}, {{d[0-9]+}}
+entry:
+  %vabd.i = insertelement <1 x double> undef, double %a, i32 0
+  %vabd1.i = insertelement <1 x double> undef, double %b, i32 0
+  %vabd2.i = call <1 x double> @llvm.aarch64.neon.vabd.v1f64(<1 x double> %vabd.i, <1 x double> %vabd1.i)
+  %0 = extractelement <1 x double> %vabd2.i, i32 0
+  ret double %0
+}
+
+declare <1 x double> @llvm.aarch64.neon.vabd.v1f64(<1 x double>, <1 x double>)
+declare <1 x float> @llvm.aarch64.neon.vabd.v1f32(<1 x float>, <1 x float>)
diff --git a/test/MC/AArch64/neon-diagnostics.s b/test/MC/AArch64/neon-diagnostics.s
index 7bc76a0..be6c163 100644
--- a/test/MC/AArch64/neon-diagnostics.s
+++ b/test/MC/AArch64/neon-diagnostics.s
@@ -7301,3 +7301,18 @@
 // CHECK-ERROR: error: invalid operand for instruction
 // CHECK-ERROR:        fcvtzu d0, s0
 // CHECK-ERROR:                   ^
+
+//----------------------------------------------------------------------
+// Scalar Floating-point Absolute Difference
+//----------------------------------------------------------------------
+
+
+    fabd s29, d24, s20
+    fabd d29, s24, d20
+
+// CHECK-ERROR: error: invalid operand for instruction
+// CHECK-ERROR:        fabd s29, d24, s20
+// CHECK-ERROR:                  ^
+// CHECK-ERROR: error: invalid operand for instruction
+// CHECK-ERROR:        fabd d29, s24, d20
+// CHECK-ERROR:                  ^
diff --git a/test/MC/AArch64/neon-scalar-abs.s b/test/MC/AArch64/neon-scalar-abs.s
index ddcaa9d..d08756c 100644
--- a/test/MC/AArch64/neon-scalar-abs.s
+++ b/test/MC/AArch64/neon-scalar-abs.s
@@ -9,6 +9,16 @@
     abs d29, d24
 
 // CHECK: abs d29, d24    // encoding: [0x1d,0xbb,0xe0,0x5e]
+        
+//----------------------------------------------------------------------
+// Scalar Floating-point Absolute Difference
+//----------------------------------------------------------------------
+
+    fabd s29, s24, s20
+    fabd d29, d24, d20
+
+// CHECK: fabd s29, s24, s20  // encoding: [0x1d,0xd7,0xb4,0x7e]
+// CHECK: fabd d29, d24, d20  // encoding: [0x1d,0xd7,0xf4,0x7e]
 
 //----------------------------------------------------------------------
 // Scalar Signed Saturating Absolute Value
diff --git a/test/MC/Disassembler/AArch64/neon-instructions.txt b/test/MC/Disassembler/AArch64/neon-instructions.txt
index 3ed228a..f33c35b 100644
--- a/test/MC/Disassembler/AArch64/neon-instructions.txt
+++ b/test/MC/Disassembler/AArch64/neon-instructions.txt
@@ -2609,3 +2609,11 @@
 # CHECK: fcvtzu d21, d14
 0xac,0xb9,0xa1,0x7e
 0xd5,0xb9,0xe1,0x7e
+
+#----------------------------------------------------------------------
+# Scalar Floating-point Absolute Difference
+#----------------------------------------------------------------------
+# CHECK: fabd s29, s24, s20
+# CHECK: fabd d29, d24, d20
+0x1d,0xd7,0xb4,0x7e
+0x1d,0xd7,0xf4,0x7e