Xform bitconvert(build_pair(load a, load b)) to a single load if the load locations are at the right offset from each other.

llvm-svn: 51008

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/combine-lds.ll b/llvm/test/CodeGen/X86/combine-lds.ll
new file mode 100644
index 00000000000..5e0ad996678
--- /dev/null
+++ b/llvm/test/CodeGen/X86/combine-lds.ll
@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep movsd
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep mov | count 1
+
+define fastcc double @doload64(i64 %x) nounwind  {
+	%tmp717 = bitcast i64 %x to double
+	ret double %tmp717
+}