[X86] DAGCombine should not introduce FILD in soft-float mode
The x86 "sitofp i64 to double" dag combine, in 32-bit mode, lowers sitofp
directly to X86ISD::FILD (or FILD_FLAG). This should not be done in soft-float mode.
llvm-svn: 252042
diff --git a/llvm/test/CodeGen/X86/soft-sitofp.ll b/llvm/test/CodeGen/X86/soft-sitofp.ll
new file mode 100644
index 0000000..da26c7f
--- /dev/null
+++ b/llvm/test/CodeGen/X86/soft-sitofp.ll
@@ -0,0 +1,15 @@
+; RUN: llc < %s | FileCheck %s
+
+target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
+target triple = "i386-pc-linux"
+
+; Function Attrs: nounwind
+; CHECK-LABEL: ll_to_d:
+; CHECK: calll __floatdidf
+define double @ll_to_d(i64 %n) #0 {
+entry:
+ %conv = sitofp i64 %n to double
+ ret double %conv
+}
+
+attributes #0 = { nounwind "use-soft-float"="true" }