<div dir="ltr">I am seeing clang for <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">arm-</span><span class="gmail-gr_ gmail-gr_62 gmail-gr-alert gmail-gr_spell gmail-gr_inline_cards gmail-gr_run_anim gmail-ContextualSpelling gmail-ins-del gmail-multiReplace" id="gmail-62" style="display:inline;color:rgb(34,34,34);font-size:small;border-bottom:2px solid transparent;background-repeat:no-repeat;font-family:arial,sans-serif;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">linux</span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">-</span><span class="gmail-gr_ gmail-gr_63 gmail-gr-alert gmail-gr_spell gmail-gr_inline_cards gmail-gr_run_anim gmail-ContextualSpelling" id="gmail-63" style="display:inline;color:rgb(34,34,34);font-size:small;border-bottom:2px solid transparent;background-repeat:no-repeat;font-family:arial,sans-serif;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial">androideabi emit 16-byte-</span>aligned vst1.64 and vld1.64, but the ABI only guarantees 8-byte alignment. Result at runtime is SIGBUS. Since clang emits "#define __<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">BIGGEST_ALIGNMENT__ 8", it is aware of the ABI's maximum alignment.</span><br><br>clang -S shows no alignment clause in the address-register operand. I.e., simple [rN], not [rN:128], but disassembly shows the [rN:128]. What controls that default alignment boundary?<div><br></div><div>G</div><div><br></div></div>