Fix @llvm.frameaddress codegen. FP elimination optimization should be disabled when frame address is desired. Also add support for depth > 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56683 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/x86-64-frameaddr.ll b/test/CodeGen/X86/x86-64-frameaddr.ll
index 86a238f..8006099 100644
--- a/test/CodeGen/X86/x86-64-frameaddr.ll
+++ b/test/CodeGen/X86/x86-64-frameaddr.ll
@@ -1,7 +1,6 @@
-; RUN: llvm-as < %s | llc -march=x86-64 | grep {leaq -8(%rsp), %rax}
-@llvm.noinline = appending global [1 x i8*] [ i8* bitcast (i64* ()* @stack_end_address to i8*) ], section "llvm.metadata"
+; RUN: llvm-as < %s | llc -march=x86-64 | grep movq | grep rbp
-define internal i64* @stack_end_address() nounwind {
+define i64* @stack_end_address() nounwind {
entry:
tail call i8* @llvm.frameaddress( i32 0 )
bitcast i8* %0 to i64*
diff --git a/test/CodeGen/X86/x86-frameaddr.ll b/test/CodeGen/X86/x86-frameaddr.ll
new file mode 100644
index 0000000..b9d6d13
--- /dev/null
+++ b/test/CodeGen/X86/x86-frameaddr.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep mov | grep ebp
+
+define i8* @t() nounwind {
+entry:
+ %0 = tail call i8* @llvm.frameaddress(i32 0)
+ ret i8* %0
+}
+
+declare i8* @llvm.frameaddress(i32) nounwind readnone
diff --git a/test/CodeGen/X86/x86-frameaddr2.ll b/test/CodeGen/X86/x86-frameaddr2.ll
new file mode 100644
index 0000000..f50ab07
--- /dev/null
+++ b/test/CodeGen/X86/x86-frameaddr2.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep mov | count 3
+
+define i8* @t() nounwind {
+entry:
+ %0 = tail call i8* @llvm.frameaddress(i32 2)
+ ret i8* %0
+}
+
+declare i8* @llvm.frameaddress(i32) nounwind readnone