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fa5aafaac2
If a vector index is out of bounds, the result is supposed to be undefined but is not undefined behavior. Change the legalization for indexing the vector on the stack so that an out of bounds index does not create an out of bounds memory access. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291604 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.5 KiB
LLVM
43 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-apple-darwin9.2.2 -mattr=+sse2,-sse4.1 | FileCheck %s --check-prefix=X32
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; RUN: llc < %s -mtriple=x86_64-apple-darwin9.2.2 -mattr=+sse2,-sse4.1 | FileCheck %s --check-prefix=X64
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define <8 x float> @f(<8 x float> %a, i32 %b) nounwind {
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; X32-LABEL: f:
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; X32: ## BB#0: ## %entry
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; X32-NEXT: pushl %ebp
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; X32-NEXT: movl %esp, %ebp
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; X32-NEXT: andl $-32, %esp
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; X32-NEXT: subl $64, %esp
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; X32-NEXT: movl 8(%ebp), %eax
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; X32-NEXT: andl $7, %eax
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; X32-NEXT: movaps %xmm1, {{[0-9]+}}(%esp)
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; X32-NEXT: movaps %xmm0, (%esp)
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; X32-NEXT: movl $1084227584, (%esp,%eax,4) ## imm = 0x40A00000
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; X32-NEXT: movaps (%esp), %xmm0
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; X32-NEXT: movaps {{[0-9]+}}(%esp), %xmm1
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; X32-NEXT: movl %ebp, %esp
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; X32-NEXT: popl %ebp
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; X32-NEXT: retl
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;
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; X64-LABEL: f:
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; X64: ## BB#0: ## %entry
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; X64-NEXT: pushq %rbp
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; X64-NEXT: movq %rsp, %rbp
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; X64-NEXT: andq $-32, %rsp
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; X64-NEXT: subq $64, %rsp
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; X64-NEXT: ## kill: %EDI<def> %EDI<kill> %RDI<def>
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; X64-NEXT: movaps %xmm1, {{[0-9]+}}(%rsp)
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; X64-NEXT: movaps %xmm0, (%rsp)
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; X64-NEXT: andl $7, %edi
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; X64-NEXT: movl $1084227584, (%rsp,%rdi,4) ## imm = 0x40A00000
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; X64-NEXT: movaps (%rsp), %xmm0
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; X64-NEXT: movaps {{[0-9]+}}(%rsp), %xmm1
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; X64-NEXT: movq %rbp, %rsp
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; X64-NEXT: popq %rbp
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; X64-NEXT: retq
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entry:
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%vecins = insertelement <8 x float> %a, float 5.000000e+00, i32 %b
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ret <8 x float> %vecins
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}
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