[arm] Implement eabi_attribute, cpu, and fpu directives.

This commit allows the ARM integrated assembler to parse
and assemble the code with .eabi_attribute, .cpu, and
.fpu directives.

To implement the feature, this commit moves the code from
AttrEmitter to ARMTargetStreamers, and several new test
cases related to cortex-m4, cortex-r5, and cortex-a15 are
added.

Besides, this commit also change the Subtarget->isFPOnlySP()
to Subtarget->hasD16() to match the usage of .fpu directive.

This commit changes the test cases:

* Several .eabi_attribute directives in
  2010-09-29-mc-asm-header-test.ll are removed because the .fpu
  directive already cover the functionality.

* In the Cortex-A15 test case, the value for
  Tag_Advanced_SIMD_arch has be changed from 1 to 2,
  which is more precise.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193524 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 134 insertions, 0 deletions

diff --git a/test/MC/ARM/directive-cpu.s b/test/MC/ARM/directive-cpu.s
new file mode 100644
index 0000000..952dd93
--- /dev/null
+++ b/test/MC/ARM/directive-cpu.s
@@ -0,0 +1,26 @@
+@ RUN: llvm-mc < %s -triple armv7-unknown-linux-gnueabi -filetype=obj -o - \
+@ RUN:   | llvm-readobj -s -sd | FileCheck %s
+
+@ CHECK: Name: .ARM.attribute
+@ CHECK: SectionData (
+
+@ <format-version>
+@ CHECK: 41
+
+@ <section-length>
+@ CHECK: 1A0000 00
+
+@ <vendor-name> "aeabi\0"
+@ CHECK: 616561 626900
+
+@ <file-tag>
+@ CHECK: 01
+
+@ <size>
+@ CHECK: 10000000
+
+	.cpu	cortex-a8
+@ CHECK: 05
+@ CHECK: 434F52 5445582D 413800
+
+@ CHECK: )
diff --git a/test/MC/ARM/directive-eabi_attribute.s b/test/MC/ARM/directive-eabi_attribute.s
new file mode 100644
index 0000000..c060b80
--- /dev/null
+++ b/test/MC/ARM/directive-eabi_attribute.s
@@ -0,0 +1,56 @@
+@ RUN: llvm-mc < %s -triple armv7-unknown-linux-gnueabi -filetype=obj -o - \
+@ RUN:   | llvm-readobj -s -sd | FileCheck %s
+
+@ CHECK: Name: .ARM.attribute
+@ CHECK: SectionData (
+
+@ <format-version>
+@ CHECK: 41
+
+@ <section-length>
+@ CHECK: 250000 00
+
+@ <vendor-name> "aeabi\0"
+@ CHECK: 616561 626900
+
+@ <file-tag>
+@ CHECK: 01
+
+@ <size>
+@ CHECK: 1B000000
+
+@ <attribute>*
+
+	.eabi_attribute 6, 10
+@ CHECK: 060A
+
+	.eabi_attribute 7, 65
+@ CHECK: 0741
+
+	.eabi_attribute 8, 1
+@ CHECK: 0801
+
+	.eabi_attribute 9, 2
+@ CHECK: 0902
+
+	.eabi_attribute 10, 3
+@ CHECK: 0A03
+
+	.eabi_attribute 12, 1
+@ CHECK: 0C01
+
+	.eabi_attribute 20, 1
+@ CHECK: 1401
+
+	.eabi_attribute 21, 1
+@ CHECK: 1501
+
+	.eabi_attribute 23, 3
+@ CHECK: 1703
+
+	.eabi_attribute 24, 1
+@ CHECK: 1801
+
+	.eabi_attribute 25, 1
+@ CHECK: 1901
+@ CHECK: )
diff --git a/test/MC/ARM/directive-fpu-multiple.s b/test/MC/ARM/directive-fpu-multiple.s
new file mode 100644
index 0000000..6a93f24
--- /dev/null
+++ b/test/MC/ARM/directive-fpu-multiple.s
@@ -0,0 +1,26 @@
+@ Check multiple .fpu directives.
+
+@ The later .fpu directive should overwrite the earlier one.
+@ See also: directive-fpu-multiple2.s.
+
+@ RUN: llvm-mc < %s -triple arm-unknown-linux-gnueabi -filetype=obj \
+@ RUN:   | llvm-readobj -s -sd | FileCheck %s
+
+	.fpu neon
+	.fpu vfpv4
+
+@ CHECK:      Name: .ARM.attributes
+@ CHECK-NEXT: Type: SHT_ARM_ATTRIBUTES (0x70000003)
+@ CHECK-NEXT: Flags [ (0x0)
+@ CHECK-NEXT: ]
+@ CHECK-NEXT: Address: 0x0
+@ CHECK-NEXT: Offset: 0x34
+@ CHECK-NEXT: Size: 18
+@ CHECK-NEXT: Link: 0
+@ CHECK-NEXT: Info: 0
+@ CHECK-NEXT: AddressAlignment: 1
+@ CHECK-NEXT: EntrySize: 0
+@ CHECK-NEXT: SectionData (
+@ CHECK-NEXT:   0000: 41110000 00616561 62690001 07000000
+@ CHECK-NEXT:   0010: 0A05
+@ CHECK-NEXT: )
diff --git a/test/MC/ARM/directive-fpu.s b/test/MC/ARM/directive-fpu.s
new file mode 100644
index 0000000..24e159c
--- /dev/null
+++ b/test/MC/ARM/directive-fpu.s
@@ -0,0 +1,26 @@
+@ RUN: llvm-mc < %s -triple armv7-unknown-linux-gnueabi -filetype=obj -o - \
+@ RUN:   | llvm-readobj -s -sd | FileCheck %s
+
+@ CHECK: Name: .ARM.attribute
+@ CHECK: SectionData (
+
+@ <format-version>
+@ CHECK: 41
+
+@ <section-length>
+@ CHECK: 130000 00
+
+@ <vendor-name> "aeabi\0"
+@ CHECK: 616561 626900
+
+@ <file-tag>
+@ CHECK: 01
+
+@ <size>
+@ CHECK: 09000000
+
+	.fpu	neon
+@ CHECK: 0A03
+@ CHECK: 0C01
+
+@ CHECK: )