1 ; Coalescing from R32 to a subset R32_. Once another register coalescer bug is 2 ; fixed, the movb should go away as well. 3 4 ; RUN: llc < %s -march=x86 -relocation-model=static | \ 5 ; RUN: grep movl 6 7 @B = external global i32 ; <i32*> [#uses=2] 8 @C = external global i16* ; <i16**> [#uses=2] 9 10 define void @test(i32 %A) { 11 %A.upgrd.1 = trunc i32 %A to i8 ; <i8> [#uses=1] 12 %tmp2 = load i32* @B ; <i32> [#uses=1] 13 %tmp3 = and i8 %A.upgrd.1, 16 ; <i8> [#uses=1] 14 %shift.upgrd.2 = zext i8 %tmp3 to i32 ; <i32> [#uses=1] 15 %tmp4 = shl i32 %tmp2, %shift.upgrd.2 ; <i32> [#uses=1] 16 store i32 %tmp4, i32* @B 17 %tmp6 = lshr i32 %A, 3 ; <i32> [#uses=1] 18 %tmp = load i16** @C ; <i16*> [#uses=1] 19 %tmp8 = ptrtoint i16* %tmp to i32 ; <i32> [#uses=1] 20 %tmp9 = add i32 %tmp8, %tmp6 ; <i32> [#uses=1] 21 %tmp9.upgrd.3 = inttoptr i32 %tmp9 to i16* ; <i16*> [#uses=1] 22 store i16* %tmp9.upgrd.3, i16** @C 23 ret void 24 } 25 26
