Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/CodeGen/X86/fp_load_fold.ll

@@ -0,0 +1,40 @@
+; RUN: llc < %s -mtriple=i686-- -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, double* %P		; <double> [#uses=1]
+	%R = fadd double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_mul(double %X, double* %P) {
+	%Y = load double, double* %P		; <double> [#uses=1]
+	%R = fmul double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_sub(double %X, double* %P) {
+	%Y = load double, double* %P		; <double> [#uses=1]
+	%R = fsub double %X, %Y		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_subr(double %X, double* %P) {
+	%Y = load double, double* %P		; <double> [#uses=1]
+	%R = fsub double %Y, %X		; <double> [#uses=1]
+	ret double %R
+}
+
+define double @test_div(double %X, double* %P) {
+	%Y = load double, 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, double* %P		; <double> [#uses=1]
+	%R = fdiv double %Y, %X		; <double> [#uses=1]
+	ret double %R
+}