1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=i686-- -x86-asm-syntax=intel | FileCheck %s 3 4;; X's live range extends beyond the shift, so the register allocator 5;; cannot coalesce it with Y. Because of this, a copy needs to be 6;; emitted before the shift to save the register value before it is 7;; clobbered. However, this copy is not needed if the register 8;; allocator turns the shift into an LEA. This also occurs for ADD. 9 10; Check that the shift gets turned into an LEA. 11 12@G = external dso_local global i32 ; <i32*> [#uses=1] 13 14define i32 @test1(i32 %X) { 15; CHECK-LABEL: test1: 16; CHECK: # %bb.0: 17; CHECK-NEXT: mov eax, dword ptr [esp + 4] 18; CHECK-NEXT: lea ecx, [4*eax] 19; CHECK-NEXT: mov dword ptr [G], ecx 20; CHECK-NEXT: ret 21 %Z = shl i32 %X, 2 ; <i32> [#uses=1] 22 store volatile i32 %Z, i32* @G 23 ret i32 %X 24} 25 26