59 lines
2.4 KiB
LLVM
59 lines
2.4 KiB
LLVM
; RUN: split-file %s %t
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; RUN: cat %t/main.ll %t/align4.ll > %t/a2.ll
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; RUN: cat %t/main.ll %t/align16.ll > %t/b2.ll
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; RUN: llc -mtriple=i386-unknown-freebsd -mcpu=core2 -relocation-model=pic < %t/a2.ll | FileCheck %s -check-prefix=UNALIGNED
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; RUN: llc -mtriple=i386-unknown-freebsd -mcpu=core2 -relocation-model=pic < %t/b2.ll | FileCheck %s -check-prefix=ALIGNED
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; RUN: llc -mtriple=i386-unknown-freebsd -mcpu=core2 -stackrealign -relocation-model=pic < %t/a2.ll | FileCheck %s -check-prefix=FORCEALIGNED
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;--- main.ll
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@arr = internal unnamed_addr global [32 x i32] zeroinitializer, align 16
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; PR12250
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define i32 @test1() {
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vector.ph:
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br label %vector.body
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vector.body:
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%index = phi i32 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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%0 = getelementptr inbounds [32 x i32], [32 x i32]* @arr, i32 0, i32 %index
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%1 = bitcast i32* %0 to <4 x i32>*
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%wide.load = load <4 x i32>, <4 x i32>* %1, align 16
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%2 = add nsw <4 x i32> %wide.load, <i32 10, i32 10, i32 10, i32 10>
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%3 = xor <4 x i32> %2, <i32 123345, i32 123345, i32 123345, i32 123345>
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%4 = add nsw <4 x i32> %3, <i32 112, i32 112, i32 112, i32 112>
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%5 = xor <4 x i32> %4, <i32 543345, i32 543345, i32 543345, i32 543345>
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%6 = add nsw <4 x i32> %5, <i32 73, i32 73, i32 73, i32 73>
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%7 = xor <4 x i32> %6, <i32 345987, i32 345987, i32 345987, i32 345987>
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%8 = add nsw <4 x i32> %7, <i32 48, i32 48, i32 48, i32 48>
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%9 = xor <4 x i32> %8, <i32 123987, i32 123987, i32 123987, i32 123987>
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store <4 x i32> %9, <4 x i32>* %1, align 16
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%index.next = add i32 %index, 4
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%10 = icmp eq i32 %index.next, 32
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br i1 %10, label %middle.block, label %vector.body
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middle.block:
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ret i32 0
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; We can't fold the spill into a padd unless the stack is aligned. Just spilling
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; doesn't force stack realignment though
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; UNALIGNED-LABEL: @test1
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; UNALIGNED-NOT: andl $-{{..}}, %esp
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; UNALIGNED: movdqu {{.*}} # 16-byte Spill
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; UNALIGNED-NOT: paddd {{.*}} # 16-byte Folded Reload
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; ALIGNED-LABEL: @test1
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; ALIGNED-NOT: andl $-{{..}}, %esp
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; ALIGNED: movdqa {{.*}} # 16-byte Spill
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; ALIGNED: paddd {{.*}} # 16-byte Folded Reload
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; FORCEALIGNED-LABEL: @test1
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; FORCEALIGNED: andl $-{{..}}, %esp
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; FORCEALIGNED: movdqa {{.*}} # 16-byte Spill
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; FORCEALIGNED: paddd {{.*}} # 16-byte Folded Reload
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}
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!llvm.module.flags = !{!0}
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;--- align4.ll
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!0 = !{i32 2, !"override-stack-alignment", i32 4}
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;--- align16.ll
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!0 = !{i32 2, !"override-stack-alignment", i32 16}
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