1;; X's live range extends beyond the shift, so the register allocator
2;; cannot coalesce it with Y.  Because of this, a copy needs to be
3;; emitted before the shift to save the register value before it is
4;; clobbered.  However, this copy is not needed if the register
5;; allocator turns the shift into an LEA.  This also occurs for ADD.
6
7; Check that the shift gets turned into an LEA.
8
9; RUN: llc < %s -march=x86 -x86-asm-syntax=intel | \
10; RUN:   not grep "mov E.X, E.X"
11
12@G = external global i32                ; <i32*> [#uses=1]
13
14define i32 @test1(i32 %X) {
15        %Z = shl i32 %X, 2              ; <i32> [#uses=1]
16        store volatile i32 %Z, i32* @G
17        ret i32 %X
18}
19
20