adds some attributes to attribute section when cpu is "xscale"

(this is what used in Android NDK, when architecture is ARMv5)

patch by Koan-Sin Tan

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131751 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index 93282701d85f6c453523a8dcd2ab9d5ff6f7a0c5..15dc9bdcbfb9835d3425115b006987d77d7250d1 100644 (file)
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -588,6 +588,12 @@ void ARMAsmPrinter::emitAttributes() {
     //
 
     /// ADD additional Else-cases here!
+  } else if (CPUString == "xscale") {
+    AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v5TEJ);
+    AttrEmitter->EmitAttribute(ARMBuildAttrs::ARM_ISA_use,
+                               ARMBuildAttrs::Allowed);
+    AttrEmitter->EmitAttribute(ARMBuildAttrs::THUMB_ISA_use,
+                               ARMBuildAttrs::Allowed);
   } else if (CPUString == "generic") {
     // FIXME: Why these defaults?
     AttrEmitter->EmitAttribute(ARMBuildAttrs::CPU_arch, ARMBuildAttrs::v4T);

diff --git a/test/MC/ARM/xscale-attributes.ll b/test/MC/ARM/xscale-attributes.ll
new file mode 100644 (file)
index 0000000..e576278
--- /dev/null
+++ b/test/MC/ARM/xscale-attributes.ll
@@ -0,0 +1,31 @@
+; RUN: llc %s -mtriple=thumbv5-linux-gnueabi -mcpu=xscale -o - | \
+; RUN: FileCheck -check-prefix=ASM %s
+
+; RUN: llc %s -mtriple=thumbv5-linux-gnueabi -filetype=obj \
+; RUN: -mcpu=xscale -o - | elf-dump --dump-section-data | \
+; RUN: FileCheck -check-prefix=OBJ %s
+
+; FIXME: The OBJ test should be a .s to .o test and the ASM test should
+; be moved to test/CodeGen/ARM.
+
+define void @foo() nounwind {
+entry:
+  ret void
+}
+
+; ASM:           .eabi_attribute 6, 5
+; ASM-NEXT:      .eabi_attribute 8, 1
+; ASM-NEXT:      .eabi_attribute 9, 1
+
+; OBJ:           Section 0x00000004
+; OBJ-NEXT:      'sh_name', 0x0000000c
+; OBJ-NEXT:      'sh_type', 0x70000003
+; OBJ-NEXT:       'sh_flags', 0x00000000
+; OBJ-NEXT:       'sh_addr', 0x00000000
+; OBJ-NEXT:       'sh_offset', 0x00000038
+; OBJ-NEXT:       'sh_size', 0x00000020
+; OBJ-NEXT:       'sh_link', 0x00000000
+; OBJ-NEXT:       'sh_info', 0x00000000
+; OBJ-NEXT:       'sh_addralign', 0x00000001
+; OBJ-NEXT:       'sh_entsize', 0x00000000
+; OBJ-NEXT:      '_section_data', '411f0000 00616561 62690001 15000000 06050801 09011401 15011703 18011901'