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Reserve x18 on AArch64 and un-reserve x16

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This commit is contained in:
Amanieu d'Antras 2021-04-30 18:30:30 +01:00
parent 09cfb248e7
commit ea310d9253
3 changed files with 9 additions and 10 deletions
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6
compiler/rustc_target/src/asm/aarch64.rs
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@ -83,8 +83,8 @@ def_regs! {
x13: reg = ["x13", "w13"],
x14: reg = ["x14", "w14"],
x15: reg = ["x15", "w15"],
x16: reg = ["x16", "w16"],
x17: reg = ["x17", "w17"],
x18: reg = ["x18", "w18"],
x20: reg = ["x20", "w20"],
x21: reg = ["x21", "w21"],
x22: reg = ["x22", "w22"],
@ -127,8 +127,8 @@ def_regs! {
v29: vreg = ["v29", "b29", "h29", "s29", "d29", "q29"],
v30: vreg = ["v30", "b30", "h30", "s30", "d30", "q30"],
v31: vreg = ["v31", "b31", "h31", "s31", "d31", "q31"],
#error = ["x16", "w16"] =>
"x16 is used internally by LLVM and cannot be used as an operand for inline asm",
#error = ["x18", "w18"] =>
"x18 is used as a reserved register on some targets and cannot be used as an operand for inline asm",
#error = ["x19", "w19"] =>
"x19 is used internally by LLVM and cannot be used as an operand for inline asm",
#error = ["x29", "w29", "fp", "wfp"] =>