| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; Coalescing from R32 to a subset R32_. Once another register coalescer bug is |
| ; fixed, the movb should go away as well. |
| |
| ; RUN: llc < %s -mtriple=i686-- -relocation-model=static | FileCheck %s |
| |
| @B = external dso_local global i32 ; <i32*> [#uses=2] |
| @C = external dso_local global i16* ; <i16**> [#uses=2] |
| |
| define void @test(i32 %A) { |
| ; CHECK-LABEL: test: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax |
| ; CHECK-NEXT: movl %eax, %ecx |
| ; CHECK-NEXT: andb $16, %cl |
| ; CHECK-NEXT: shll %cl, B |
| ; CHECK-NEXT: shrl $3, %eax |
| ; CHECK-NEXT: addl %eax, C |
| ; CHECK-NEXT: retl |
| %A.upgrd.1 = trunc i32 %A to i8 ; <i8> [#uses=1] |
| %tmp2 = load i32, i32* @B ; <i32> [#uses=1] |
| %tmp3 = and i8 %A.upgrd.1, 16 ; <i8> [#uses=1] |
| %shift.upgrd.2 = zext i8 %tmp3 to i32 ; <i32> [#uses=1] |
| %tmp4 = shl i32 %tmp2, %shift.upgrd.2 ; <i32> [#uses=1] |
| store i32 %tmp4, i32* @B |
| %tmp6 = lshr i32 %A, 3 ; <i32> [#uses=1] |
| %tmp = load i16*, i16** @C ; <i16*> [#uses=1] |
| %tmp8 = ptrtoint i16* %tmp to i32 ; <i32> [#uses=1] |
| %tmp9 = add i32 %tmp8, %tmp6 ; <i32> [#uses=1] |
| %tmp9.upgrd.3 = inttoptr i32 %tmp9 to i16* ; <i16*> [#uses=1] |
| store i16* %tmp9.upgrd.3, i16** @C |
| ret void |
| } |
| |
