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