Fix PR4687. Pre ARMv5te does not support ldrd / strd. Patch by John Tytgat.

llvm-svn: 83058

1 files changed, 19 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/2009-09-28-LdStOptiBug.ll b/llvm/test/CodeGen/ARM/2009-09-28-LdStOptiBug.ll
new file mode 100644
index 00000000000..53bd6682595
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/2009-09-28-LdStOptiBug.ll
@@ -0,0 +1,19 @@
+; RUN: llc < %s -mtriple=armv5-unknown-linux-gnueabi -mcpu=arm10tdmi | FileCheck %s
+; PR4687
+
+%0 = type { double, double }
+
+define arm_aapcscc void @foo(%0* noalias nocapture sret %agg.result, double %x.0, double %y.0) nounwind {
+; CHECK: foo:
+; CHECK: bl __adddf3
+; CHECK-NOT: strd
+; CHECK: mov
+  %x76 = fmul double %y.0, 0.000000e+00           ; <double> [#uses=1]
+  %x77 = fadd double %y.0, 0.000000e+00           ; <double> [#uses=1]
+  %tmpr = fadd double %x.0, %x76                  ; <double> [#uses=1]
+  %agg.result.0 = getelementptr %0* %agg.result, i32 0, i32 0 ; <double*> [#uses=1]
+  store double %tmpr, double* %agg.result.0, align 8
+  %agg.result.1 = getelementptr %0* %agg.result, i32 0, i32 1 ; <double*> [#uses=1]
+  store double %x77, double* %agg.result.1, align 8
+  ret void
+}