Import LLVM, at r72732.vendor/llvm/llvm-r72732

1 files changed, 40 insertions, 0 deletions

diff --git a/test/CodeGen/X86/fp_load_fold.ll b/test/CodeGen/X86/fp_load_fold.ll
new file mode 100644
index 000000000000..7c33cb32bc6d
--- /dev/null
+++ b/test/CodeGen/X86/fp_load_fold.ll
@@ -0,0 +1,40 @@
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | \
+; RUN:   grep -i ST | not grep {fadd\\|fsub\\|fdiv\\|fmul}
+
+; Test that the load of the memory location is folded into the operation.
+
+define double @test_add(double %X, double* %P) {
+	%Y = load double* %P		; <double> [#uses=1]
+	%R = add double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_mul(double %X, double* %P) {
+	%Y = load double* %P		; <double> [#uses=1]
+	%R = mul double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_sub(double %X, double* %P) {
+	%Y = load double* %P		; <double> [#uses=1]
+	%R = sub double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_subr(double %X, double* %P) {
+	%Y = load double* %P		; <double> [#uses=1]
+	%R = sub double %Y, %X		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_div(double %X, double* %P) {
+	%Y = load double* %P		; <double> [#uses=1]
+	%R = fdiv double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_divr(double %X, double* %P) {
+	%Y = load double* %P		; <double> [#uses=1]
+	%R = fdiv double %Y, %X		; <double> [#uses=1]
+	ret double %R
+}