fp_load_fold.ll   [plain text]

; RUN: llc < %s -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 = fadd 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 = fmul 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 = fsub 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 = fsub 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
}