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aecf5b1559
Memory operands store a base alignment that does not factor in the effect of the offset on the alignment. Previously the printing code only printed the base alignment if it was different than the size. If there is an offset, the reader would need to figure out the effective alignment themselves. This has confused me before and someone else was recently confused on IRC. This patch prints the possibly offset adjusted alignment if it is different than the size. And prints the base alignment if it is different than the alignment. The MIR parser has been updated to read basealign in addition to align. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D94344
31 lines
938 B
YAML
31 lines
938 B
YAML
# RUN: not llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
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--- |
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define void @memory_alignment(<8 x float>* %vec) {
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entry:
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%v = load <8 x float>, <8 x float>* %vec
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%v2 = insertelement <8 x float> %v, float 0.0, i32 4
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store <8 x float> %v2, <8 x float>* %vec
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ret void
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}
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...
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---
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name: memory_alignment
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tracksRegLiveness: true
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liveins:
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- { reg: '$rdi' }
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body: |
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bb.0.entry:
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liveins: $rdi
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; CHECK: [[@LINE+1]]:71: expected an integer literal after 'align'
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$xmm0 = MOVAPSrm $rdi, 1, _, 0, _ :: (load 16 from %ir.vec, align -32)
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$xmm1 = MOVAPSrm $rdi, 1, _, 16, _ :: (load 16 from %ir.vec + 16, basealign 32)
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$xmm2 = FsFLD0SS
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$xmm1 = MOVSSrr killed $xmm1, killed $xmm2
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MOVAPSmr $rdi, 1, _, 0, _, killed $xmm0 :: (store 16 into %ir.vec, align 32)
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MOVAPSmr killed $rdi, 1, _, 16, _, killed $xmm1 :: (store 16 into %ir.vec + 16, basealign 32)
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RETQ
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...
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