1 ; RUN: llc -mtriple=i386-unknown-freebsd -mcpu=core2 -stack-alignment=4 -relocation-model=pic < %s | FileCheck %s -check-prefix=UNALIGNED 2 ; RUN: llc -mtriple=i386-unknown-freebsd -mcpu=core2 -stack-alignment=16 -relocation-model=pic < %s | FileCheck %s -check-prefix=ALIGNED 3 ; RUN: llc -mtriple=i386-unknown-freebsd -mcpu=core2 -stack-alignment=4 -force-align-stack -relocation-model=pic < %s | FileCheck %s -check-prefix=FORCEALIGNED 4 5 @arr = internal unnamed_addr global [32 x i32] zeroinitializer, align 16 6 7 ; PR12250 8 define i32 @test1() { 9 vector.ph: 10 br label %vector.body 11 12 vector.body: 13 %index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ] 14 %0 = getelementptr inbounds [32 x i32], [32 x i32]* @arr, i32 0, i32 %index 15 %1 = bitcast i32* %0 to <4 x i32>* 16 %wide.load = load <4 x i32>, <4 x i32>* %1, align 16 17 %2 = add nsw <4 x i32> %wide.load, <i32 10, i32 10, i32 10, i32 10> 18 %3 = xor <4 x i32> %2, <i32 123345, i32 123345, i32 123345, i32 123345> 19 %4 = add nsw <4 x i32> %3, <i32 112, i32 112, i32 112, i32 112> 20 %5 = xor <4 x i32> %4, <i32 543345, i32 543345, i32 543345, i32 543345> 21 %6 = add nsw <4 x i32> %5, <i32 73, i32 73, i32 73, i32 73> 22 %7 = xor <4 x i32> %6, <i32 345987, i32 345987, i32 345987, i32 345987> 23 %8 = add nsw <4 x i32> %7, <i32 48, i32 48, i32 48, i32 48> 24 %9 = xor <4 x i32> %8, <i32 123987, i32 123987, i32 123987, i32 123987> 25 store <4 x i32> %9, <4 x i32>* %1, align 16 26 %index.next = add i32 %index, 4 27 %10 = icmp eq i32 %index.next, 32 28 br i1 %10, label %middle.block, label %vector.body 29 30 middle.block: 31 ret i32 0 32 33 ; We can't fold the spill into a padd unless the stack is aligned. Just spilling 34 ; doesn't force stack realignment though 35 ; UNALIGNED-LABEL: @test1 36 ; UNALIGNED-NOT: andl $-{{..}}, %esp 37 ; UNALIGNED: movdqu {{.*}} # 16-byte Folded Spill 38 ; UNALIGNED-NOT: paddd {{.*}} # 16-byte Folded Reload 39 40 ; ALIGNED-LABEL: @test1 41 ; ALIGNED-NOT: andl $-{{..}}, %esp 42 ; ALIGNED: movdqa {{.*}} # 16-byte Spill 43 ; ALIGNED: paddd {{.*}} # 16-byte Folded Reload 44 45 ; FORCEALIGNED-LABEL: @test1 46 ; FORCEALIGNED: andl $-{{..}}, %esp 47 ; FORCEALIGNED: movdqa {{.*}} # 16-byte Spill 48 ; FORCEALIGNED: paddd {{.*}} # 16-byte Folded Reload 49 } 50
