[ARM] Generate ABI_optimization_goals build attribute, as described in the ARM ARM.
Summary: This reverts r254234, and adds a simple fix for the annoying case of use-after-free.
Reviewers: rengolin
Subscribers: aemerson, llvm-commits, rengolin
Differential Revision: http://reviews.llvm.org/D15236
llvm-svn: 254912
diff --git a/llvm/test/CodeGen/ARM/build-attributes-optimization-optsize.ll b/llvm/test/CodeGen/ARM/build-attributes-optimization-optsize.ll
new file mode 100644
index 0000000..bab210a
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/build-attributes-optimization-optsize.ll
@@ -0,0 +1,18 @@
+; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 | FileCheck %s
+; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 | FileCheck %s
+; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 | FileCheck %s
+
+; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O0 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ
+; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O1 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ
+; RUN: llc < %s -mtriple=arm-none-none-eabi -mcpu=cortex-a7 -O3 -filetype obj -o - | llvm-readobj -arm-attributes - | FileCheck %s --check-prefix=CHECK-OBJ
+
+; CHECK: .eabi_attribute 30, 3 @ Tag_ABI_optimization_goals
+; CHECK-OBJ: TagName: ABI_optimization_goals
+; CHECK-OBJ-NEXT: Description: Size
+
+define i32 @f(i64 %z) #0 {
+ ret i32 0
+}
+
+attributes #0 = { optsize }
+