Solution
--------

The mapping from GIMPLE to corresponding rtl statements has been shown here

GIMPLE statement:
	
	line number 5 in source program
	a = b;  

RTL statement:

	(insn 5 4 6 3 (set (reg:SI 40)
        	(mem/c/i:SI (plus:SI (reg/f:SI 33 virtual-stack-vars)
                	(const_int -4 [0xfffffffffffffffc])) [0 b+0 S4 A32])) t5.c:5 -1
	     (nil))
    
	(insn 6 5 7 3 (set (mem/c/i:SI (plus:SI (reg/f:SI 33 virtual-stack-vars)
        	        (const_int -8 [0xfffffffffffffff8])) [0 a+0 S4 A32])
	        (reg:SI 40)) t5.c:5 -1
	     (nil))

GIMPLE statement:
	line number 6 in source program
	x.0 = a + b;

RTL statement:

	(insn 7 6 8 3 (set (reg:SI 41)
	        (mem/c/i:SI (plus:SI (reg/f:SI 33 virtual-stack-vars)
        	        (const_int -8 [0xfffffffffffffff8])) [0 a+0 S4 A32])) t5.c:6 -1
	     (nil))

	(insn 8 7 9 3 (set (reg:SI 42)
        	(mem/c/i:SI (plus:SI (reg/f:SI 33 virtual-stack-vars)
                	(const_int -4 [0xfffffffffffffffc])) [0 b+0 S4 A32])) t5.c:6 -1
	     (nil))

	(insn 9 8 10 3 (set (reg:SI 38 [ x.0 ])
        	(plus:SI (reg:SI 41)
	            (reg:SI 42))) t5.c:6 -1
	     (nil))





GIMPLE statement:
	line number 7 in source program
	x = x.0;

RTL statement:

(insn 10 9 11 3 (set (mem/c/i:SI (symbol_ref:SI ("x")  <var_decl 0x7f4da3498000 x>) [0 x+0 S4 A32])
        (reg:SI 38 [ x.0 ])) a.c:6 -1
     (nil))


	

GIMPLE statement:
	 line number 8 in source program
	c = 1;

RTL statement:

(insn 11 10 12 3 (set (reg:SI 43)
        (const_int 1 [0x1])) a.c:7 -1
     (nil))

(insn 12 11 13 3 (set (mem/c/i:SI (plus:SI (reg/f:SI 33 virtual-stack-vars)
                (const_int -12 [0xfffffffffffffff4])) [0 c+0 S4 A32])
        (reg:SI 43)) a.c:7 -1
     (nil))



GIMPLE statement:
	line number 9 in source program
	y = c;

RTL statement:

(insn 13 12 14 3 (set (reg:SI 44)
        (mem/c/i:SI (plus:SI (reg/f:SI 33 virtual-stack-vars)
                (const_int -12 [0xfffffffffffffff4])) [0 c+0 S4 A32])) a.c:8 -1
     (nil))


(insn 14 13 20 3 (set (mem/c/i:SI (symbol_ref:SI ("y")  <var_decl 0x7f4da34980a0 y>) [0 y+0 S4 A32])
        (reg:SI 44)) a.c:8 -1
     (nil))