Fix PR4185.
Handle FpSET_ST0_80 being used when ST0 is still alive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73850 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/inline-asm-fpstack2.ll b/test/CodeGen/X86/inline-asm-fpstack2.ll
new file mode 100644
index 0000000..9685618
--- /dev/null
+++ b/test/CodeGen/X86/inline-asm-fpstack2.ll
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | llc -march=x86 > %t
+; RUN: grep {fld %%st(0)} %t
+; PR4185
+
+define void @test() {
+return:
+ call void asm sideeffect "fistpl $0", "{st}"(double 1.000000e+06)
+ call void asm sideeffect "fistpl $0", "{st}"(double 1.000000e+06)
+ ret void
+}