1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; Coalescing from R32 to a subset R32_. Once another register coalescer bug is
3 ; fixed, the movb should go away as well.
5 ; RUN: llc < %s -mtriple=i686-- -relocation-model=static | FileCheck %s
7 @B = external dso_local global i32 ; <ptr> [#uses=2]
8 @C = external dso_local global ptr ; <ptr> [#uses=2]
10 define void @test(i32 %A) {
13 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
14 ; CHECK-NEXT: movl %eax, %ecx
15 ; CHECK-NEXT: andb $16, %cl
16 ; CHECK-NEXT: shll %cl, B
17 ; CHECK-NEXT: shrl $3, %eax
18 ; CHECK-NEXT: addl %eax, C
20 %A.upgrd.1 = trunc i32 %A to i8 ; <i8> [#uses=1]
21 %tmp2 = load i32, ptr @B ; <i32> [#uses=1]
22 %tmp3 = and i8 %A.upgrd.1, 16 ; <i8> [#uses=1]
23 %shift.upgrd.2 = zext i8 %tmp3 to i32 ; <i32> [#uses=1]
24 %tmp4 = shl i32 %tmp2, %shift.upgrd.2 ; <i32> [#uses=1]
25 store i32 %tmp4, ptr @B
26 %tmp6 = lshr i32 %A, 3 ; <i32> [#uses=1]
27 %tmp = load ptr, ptr @C ; <ptr> [#uses=1]
28 %tmp8 = ptrtoint ptr %tmp to i32 ; <i32> [#uses=1]
29 %tmp9 = add i32 %tmp8, %tmp6 ; <i32> [#uses=1]
30 %tmp9.upgrd.3 = inttoptr i32 %tmp9 to ptr ; <ptr> [#uses=1]
31 store ptr %tmp9.upgrd.3, ptr @C