1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s | FileCheck %s 3 ; 4 ; Check that the isel does not fold the shld, which already folds a load 5 ; and has two uses, into a store. 6 7 target triple = "i686-unknown-unknown" 8 9 @A = external global i32 10 11 define i32 @test5(i32 %B, i8 %C) { 12 ; CHECK-LABEL: test5: 13 ; CHECK: # %bb.0: 14 ; CHECK-NEXT: movb {{[0-9]+}}(%esp), %cl 15 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx 16 ; CHECK-NEXT: movl A, %eax 17 ; CHECK-NEXT: shldl %cl, %edx, %eax 18 ; CHECK-NEXT: movl %eax, A 19 ; CHECK-NEXT: retl 20 entry: 21 %tmp.1 = load i32, i32* @A 22 %shift.upgrd.1 = zext i8 %C to i32 23 %tmp.2 = shl i32 %tmp.1, %shift.upgrd.1 24 %tmp.3 = sub i8 32, %C 25 %shift.upgrd.2 = zext i8 %tmp.3 to i32 26 %tmp.4 = lshr i32 %B, %shift.upgrd.2 27 %tmp.5 = or i32 %tmp.4, %tmp.2 28 store i32 %tmp.5, i32* @A 29 ret i32 %tmp.5 30 } 31 32
