1 ; This checks to ensure that Subzero aligns spill slots. 2 3 ; RUN: %p2i --filetype=obj --disassemble -i %s --args -Om1 \ 4 ; RUN: -allow-externally-defined-symbols | FileCheck %s 5 ; RUN: %p2i --filetype=obj --disassemble -i %s --args -O2 \ 6 ; RUN: -allow-externally-defined-symbols | FileCheck %s 7 8 ; The location of the stack slot for a variable is inferred from the 9 ; return sequence. 10 11 ; In this file, "global" refers to a variable with a live range across 12 ; multiple basic blocks (not an LLVM global variable) and "local" 13 ; refers to a variable that is live in only a single basic block. 14 15 define internal <4 x i32> @align_global_vector(i32 %arg) { 16 entry: 17 %vec.global = insertelement <4 x i32> undef, i32 %arg, i32 0 18 br label %block 19 block: 20 call void @ForceXmmSpills() 21 ret <4 x i32> %vec.global 22 ; CHECK-LABEL: align_global_vector 23 ; CHECK: movups xmm0,XMMWORD PTR [esp] 24 ; CHECK-NEXT: add esp,0x1c 25 ; CHECK-NEXT: ret 26 } 27 28 define internal <4 x i32> @align_local_vector(i32 %arg) { 29 entry: 30 br label %block 31 block: 32 %vec.local = insertelement <4 x i32> undef, i32 %arg, i32 0 33 call void @ForceXmmSpills() 34 ret <4 x i32> %vec.local 35 ; CHECK-LABEL: align_local_vector 36 ; CHECK: movups xmm0,XMMWORD PTR [esp] 37 ; CHECK-NEXT: add esp,0x1c 38 ; CHECK-NEXT: ret 39 } 40 41 declare void @ForceXmmSpills() 42 43 define internal <4 x i32> @align_global_vector_ebp_based(i32 %arg) { 44 entry: 45 br label %eblock ; Disable alloca optimization 46 eblock: 47 %alloc = alloca i8, i32 1, align 1 48 %vec.global = insertelement <4 x i32> undef, i32 %arg, i32 0 49 br label %block 50 block: 51 call void @ForceXmmSpillsAndUseAlloca(i8* %alloc) 52 ret <4 x i32> %vec.global 53 ; CHECK-LABEL: align_global_vector_ebp_based 54 ; CHECK: movups xmm0,XMMWORD PTR [ebp-0x18] 55 ; CHECK-NEXT: mov esp,ebp 56 ; CHECK-NEXT: pop ebp 57 ; CHECK: ret 58 } 59 60 define internal <4 x i32> @align_local_vector_ebp_based(i32 %arg) { 61 entry: 62 br label %eblock ; Disable alloca optimization 63 eblock: 64 %alloc = alloca i8, i32 1, align 1 65 %vec.local = insertelement <4 x i32> undef, i32 %arg, i32 0 66 call void @ForceXmmSpillsAndUseAlloca(i8* %alloc) 67 ret <4 x i32> %vec.local 68 ; CHECK-LABEL: align_local_vector_ebp_based 69 ; CHECK: movups xmm0,XMMWORD PTR [ebp-0x18] 70 ; CHECK-NEXT: mov esp,ebp 71 ; CHECK-NEXT: pop ebp 72 ; CHECK: ret 73 } 74 75 define internal <4 x i32> @align_local_vector_and_global_float(i32 %arg) { 76 entry: 77 %float.global = sitofp i32 %arg to float 78 call void @ForceXmmSpillsAndUseFloat(float %float.global) 79 br label %block 80 block: 81 %vec.local = insertelement <4 x i32> undef, i32 undef, i32 0 82 call void @ForceXmmSpillsAndUseFloat(float %float.global) 83 ret <4 x i32> %vec.local 84 ; CHECK-LABEL: align_local_vector_and_global_float 85 ; CHECK: cvtsi2ss xmm0,eax 86 ; CHECK-NEXT: movss DWORD PTR [esp+{{0x1c|0x2c}}],xmm0 87 ; CHECK: movups xmm0,XMMWORD PTR [{{esp\+0x10|esp\+0x20}}] 88 ; CHECK-NEXT: add esp,0x3c 89 ; CHECK-NEXT: ret 90 } 91 92 declare void @ForceXmmSpillsAndUseAlloca(i8*) 93 declare void @ForceXmmSpillsAndUseFloat(float) 94
