1 ; RUN: llc -march=mipsel -O0 -relocation-model=pic < %s | FileCheck %s 2 ; Check that register scavenging spill slot is close to $fp. 3 target triple="mipsel--" 4 5 @var = external global i32 6 @ptrvar = external global i8* 7 8 ; CHECK-LABEL: func: 9 define void @func() { 10 %space = alloca i32, align 4 11 %stackspace = alloca[16384 x i32], align 4 12 13 ; ensure stackspace is not optimized out 14 %stackspace_casted = bitcast [16384 x i32]* %stackspace to i8* 15 store volatile i8* %stackspace_casted, i8** @ptrvar 16 17 ; Load values to increase register pressure. 18 %v0 = load volatile i32, i32* @var 19 %v1 = load volatile i32, i32* @var 20 %v2 = load volatile i32, i32* @var 21 %v3 = load volatile i32, i32* @var 22 %v4 = load volatile i32, i32* @var 23 %v5 = load volatile i32, i32* @var 24 %v6 = load volatile i32, i32* @var 25 %v7 = load volatile i32, i32* @var 26 %v8 = load volatile i32, i32* @var 27 %v9 = load volatile i32, i32* @var 28 %v10 = load volatile i32, i32* @var 29 %v11 = load volatile i32, i32* @var 30 %v12 = load volatile i32, i32* @var 31 %v13 = load volatile i32, i32* @var 32 %v14 = load volatile i32, i32* @var 33 %v15 = load volatile i32, i32* @var 34 %v16 = load volatile i32, i32* @var 35 36 ; Computing a stack-relative values needs an additional register. 37 ; We should get an emergency spill/reload for this. 38 ; CHECK: sw ${{.*}}, 0($sp) 39 ; CHECK: lw ${{.*}}, 0($sp) 40 store volatile i32 %v0, i32* %space 41 42 ; store values so they are used. 43 store volatile i32 %v0, i32* @var 44 store volatile i32 %v1, i32* @var 45 store volatile i32 %v2, i32* @var 46 store volatile i32 %v3, i32* @var 47 store volatile i32 %v4, i32* @var 48 store volatile i32 %v5, i32* @var 49 store volatile i32 %v6, i32* @var 50 store volatile i32 %v7, i32* @var 51 store volatile i32 %v8, i32* @var 52 store volatile i32 %v9, i32* @var 53 store volatile i32 %v10, i32* @var 54 store volatile i32 %v11, i32* @var 55 store volatile i32 %v12, i32* @var 56 store volatile i32 %v13, i32* @var 57 store volatile i32 %v14, i32* @var 58 store volatile i32 %v15, i32* @var 59 store volatile i32 %v16, i32* @var 60 61 ret void 62 } 63
