New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12843 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/fp_load_fold.llx b/test/CodeGen/X86/fp_load_fold.llx
new file mode 100644 (file)
index 0000000..7ce437d
--- /dev/null
+++ b/test/CodeGen/X86/fp_load_fold.llx
@@ -0,0 +1,40 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep ST | not grep 'fadd\|fsub\|fdiv\|fmul'
+
+; Test that the load of the memory location is folded into the operation.
+
+
+double %test_add(double %X, double *%P) {
+       %Y = load double* %P
+        %R = add double %X, %Y
+        ret double %R
+}
+
+double %test_mul(double %X, double *%P) {
+       %Y = load double* %P
+        %R = mul double %X, %Y
+        ret double %R
+}
+
+double %test_sub(double %X, double *%P) {
+       %Y = load double* %P
+        %R = sub double %X, %Y
+        ret double %R
+}
+
+double %test_subr(double %X, double *%P) {
+       %Y = load double* %P
+        %R = sub double %Y, %X
+        ret double %R
+}
+
+double %test_div(double %X, double *%P) {
+       %Y = load double* %P
+        %R = div double %X, %Y
+        ret double %R
+}
+
+double %test_divr(double %X, double *%P) {
+       %Y = load double* %P
+        %R = div double %Y, %X
+        ret double %R
+}