Enable support for returning two long-double values in ST(0)/ST(1).
This allows us to compile fp-stack-2results.ll into:
_test:
fldz
fld1
ret
which returns 1 in ST(0) and 0 in ST(1). This is needed for x86-64
_Complex long double.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48632 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/fp-stack-2results.ll b/test/CodeGen/X86/fp-stack-2results.ll
new file mode 100644
index 0000000..b44d3dd
--- /dev/null
+++ b/test/CodeGen/X86/fp-stack-2results.ll
@@ -0,0 +1,11 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep fldz
+; RUN: llvm-as < %s | llc -march=x86-64 | grep fld1
+
+; This is basically this code on x86-64:
+; _Complex long double test() { return 1.0; }
+define {x86_fp80, x86_fp80} @test() {
+ %A = fpext double 1.0 to x86_fp80
+ %B = fpext double 0.0 to x86_fp80
+ ret x86_fp80 %A, x86_fp80 %B
+}
+