1 files changed, 60 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fp-stack-2results.ll b/test/CodeGen/X86/fp-stack-2results.ll
new file mode 100644
index 0000000..321e267
--- /dev/null
+++ b/test/CodeGen/X86/fp-stack-2results.ll
@@ -0,0 +1,60 @@
+; RUN: llc < %s -march=x86 | grep fldz
+; RUN: llc < %s -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
+}
+
+
+;_test2:
+;	fld1
+;	fld	%st(0)
+;	ret
+define {x86_fp80, x86_fp80} @test2() {
+  %A = fpext double 1.0 to x86_fp80
+  ret x86_fp80 %A, x86_fp80 %A
+}
+
+; Uses both values.
+define void @call1(x86_fp80 *%P1, x86_fp80 *%P2) {
+  %a = call {x86_fp80,x86_fp80} @test()
+  %b = getresult {x86_fp80,x86_fp80} %a, 0
+  store x86_fp80 %b, x86_fp80* %P1
+
+  %c = getresult {x86_fp80,x86_fp80} %a, 1
+  store x86_fp80 %c, x86_fp80* %P2
+  ret void 
+}
+
+; Uses both values, requires fxch
+define void @call2(x86_fp80 *%P1, x86_fp80 *%P2) {
+  %a = call {x86_fp80,x86_fp80} @test()
+  %b = getresult {x86_fp80,x86_fp80} %a, 1
+  store x86_fp80 %b, x86_fp80* %P1
+
+  %c = getresult {x86_fp80,x86_fp80} %a, 0
+  store x86_fp80 %c, x86_fp80* %P2
+  ret void
+}
+
+; Uses ST(0), ST(1) is dead but must be popped.
+define void @call3(x86_fp80 *%P1, x86_fp80 *%P2) {
+  %a = call {x86_fp80,x86_fp80} @test()
+  %b = getresult {x86_fp80,x86_fp80} %a, 0
+  store x86_fp80 %b, x86_fp80* %P1
+  ret void 
+}
+
+; Uses ST(1), ST(0) is dead and must be popped.
+define void @call4(x86_fp80 *%P1, x86_fp80 *%P2) {
+  %a = call {x86_fp80,x86_fp80} @test()
+
+  %c = getresult {x86_fp80,x86_fp80} %a, 1
+  store x86_fp80 %c, x86_fp80* %P2
+  ret void 
+}
+