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f20f21ec5e
A quirk of the v8.1a spec is that when the writeback regiser for an atomic read-modify-write instruction is wzr/xzr, the instruction no longer enforces acquire ordering. However, it's still written with the misleading 'a' mnemonic. So this adds an annotation when disassembling such instructions, mentioning the change. llvm-svn: 353303
191 lines
8.9 KiB
ArmAsm
191 lines
8.9 KiB
ArmAsm
; RUN: llvm-mc -triple aarch64-apple-ios -mattr=+lse %s | FileCheck %s
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; CHECK: ldaddab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldaddah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldadda w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldadda x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldaddab w3, wzr, [x5]
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ldaddah w5, wzr, [x0]
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ldadda w7, wzr, [x5]
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ldadda x9, xzr, [sp]
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; CHECK: ldaddalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldaddalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldaddal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldaddal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldaddalb w3, wzr, [x5]
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ldaddalh w5, wzr, [x0]
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ldaddal w7, wzr, [x5]
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ldaddal x9, xzr, [sp]
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; CHECK: ldclrab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldclrah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldclra w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldclra x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldclrab w3, wzr, [x5]
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ldclrah w5, wzr, [x0]
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ldclra w7, wzr, [x5]
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ldclra x9, xzr, [sp]
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; CHECK: ldclralb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldclralh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldclral w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldclral x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldclralb w3, wzr, [x5]
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ldclralh w5, wzr, [x0]
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ldclral w7, wzr, [x5]
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ldclral x9, xzr, [sp]
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; CHECK: ldeorab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldeorah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldeora w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldeora x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldeorab w3, wzr, [x5]
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ldeorah w5, wzr, [x0]
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ldeora w7, wzr, [x5]
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ldeora x9, xzr, [sp]
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; CHECK: ldeoralb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldeoralh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldeoral w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldeoral x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldeoralb w3, wzr, [x5]
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ldeoralh w5, wzr, [x0]
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ldeoral w7, wzr, [x5]
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ldeoral x9, xzr, [sp]
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; CHECK: ldsetab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsetah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldseta w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldseta x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldsetab w3, wzr, [x5]
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ldsetah w5, wzr, [x0]
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ldseta w7, wzr, [x5]
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ldseta x9, xzr, [sp]
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; CHECK: ldsetalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsetalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldsetal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsetal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldsetalb w3, wzr, [x5]
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ldsetalh w5, wzr, [x0]
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ldsetal w7, wzr, [x5]
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ldsetal x9, xzr, [sp]
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; CHECK: ldsmaxab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmaxah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmaxa w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmaxa x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldsmaxab w3, wzr, [x5]
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ldsmaxah w5, wzr, [x0]
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ldsmaxa w7, wzr, [x5]
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ldsmaxa x9, xzr, [sp]
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; CHECK: ldsmaxalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmaxalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmaxal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmaxal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldsmaxalb w3, wzr, [x5]
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ldsmaxalh w5, wzr, [x0]
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ldsmaxal w7, wzr, [x5]
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ldsmaxal x9, xzr, [sp]
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; CHECK: ldsminab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsminah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmina w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsmina x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldsminab w3, wzr, [x5]
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ldsminah w5, wzr, [x0]
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ldsmina w7, wzr, [x5]
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ldsmina x9, xzr, [sp]
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; CHECK: ldsminalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsminalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldsminal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldsminal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldsminalb w3, wzr, [x5]
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ldsminalh w5, wzr, [x0]
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ldsminal w7, wzr, [x5]
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ldsminal x9, xzr, [sp]
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; CHECK: ldumaxab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldumaxah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldumaxa w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldumaxa x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldumaxab w3, wzr, [x5]
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ldumaxah w5, wzr, [x0]
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ldumaxa w7, wzr, [x5]
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ldumaxa x9, xzr, [sp]
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; CHECK: ldumaxalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldumaxalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldumaxal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldumaxal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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ldumaxalb w3, wzr, [x5]
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ldumaxalh w5, wzr, [x0]
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ldumaxal w7, wzr, [x5]
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ldumaxal x9, xzr, [sp]
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; CHECK: lduminab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: lduminah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: ldumina w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: ldumina x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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lduminab w3, wzr, [x5]
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lduminah w5, wzr, [x0]
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ldumina w7, wzr, [x5]
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ldumina x9, xzr, [sp]
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; CHECK: lduminalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: lduminalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: lduminal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: lduminal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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lduminalb w3, wzr, [x5]
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lduminalh w5, wzr, [x0]
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lduminal w7, wzr, [x5]
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lduminal x9, xzr, [sp]
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; CHECK: swpab w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: swpah w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: swpa w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: swpa x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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swpab w3, wzr, [x5]
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swpah w5, wzr, [x0]
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swpa w7, wzr, [x5]
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swpa x9, xzr, [sp]
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; CHECK: swpalb w3, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: swpalh w5, wzr, [x0] ; acquire semantics dropped since destination is zero
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; CHECK: swpal w7, wzr, [x5] ; acquire semantics dropped since destination is zero
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; CHECK: swpal x9, xzr, [sp] ; acquire semantics dropped since destination is zero
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swpalb w3, wzr, [x5]
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swpalh w5, wzr, [x0]
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swpal w7, wzr, [x5]
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swpal x9, xzr, [sp]
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; CHECK: ldaddal xzr, x3, [x0]{{$}}
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; CHECK: ldeora wzr, w7, [x5]{{$}}
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; CHECK: ldsminb w5, w9, [sp]{{$}}
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ldaddal xzr, x3, [x0]
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ldeora wzr, w7, [x5]
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ldsminb w5, w9, [sp]
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; CAS instructions aren't affected.
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; CHECK: casab w3, wzr, [x5]{{$}}
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; CHECK: casah w5, wzr, [x0]{{$}}
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; CHECK: casa w7, wzr, [x5]{{$}}
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; CHECK: casa x9, xzr, [sp]{{$}}
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casab w3, wzr, [x5]
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casah w5, wzr, [x0]
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casa w7, wzr, [x5]
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casa x9, xzr, [sp]
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; CHECK: casalb w3, wzr, [x5]{{$}}
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; CHECK: casalh w5, wzr, [x0]{{$}}
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; CHECK: casal w7, wzr, [x5]{{$}}
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; CHECK: casal x9, xzr, [sp]{{$}}
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casalb w3, wzr, [x5]
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casalh w5, wzr, [x0]
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casal w7, wzr, [x5]
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casal x9, xzr, [sp]
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