; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=i686-- -x86-asm-syntax=intel | FileCheck %s ;; 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. @G = external dso_local global i32 ; [#uses=1] define i32 @test1(i32 %X) { ; CHECK-LABEL: test1: ; CHECK: # %bb.0: ; CHECK-NEXT: mov eax, dword ptr [esp + 4] ; CHECK-NEXT: lea ecx, [4*eax] ; CHECK-NEXT: mov dword ptr [G], ecx ; CHECK-NEXT: ret %Z = shl i32 %X, 2 ; [#uses=1] store volatile i32 %Z, i32* @G ret i32 %X }