Update the minimum external LLVM to 17

tests/codegen/issues/issue-114312.rs

@@ -1,5 +1,4 @@
 //@ compile-flags: -O
-//@ min-llvm-version: 17
 //@ only-x86_64-unknown-linux-gnu
 
 // We want to check that this function does not mis-optimize to loop jumping.

tests/codegen/move-before-nocapture-ref-arg.rs

@@ -1,7 +1,6 @@
 // Verify that move before the call of the function with noalias, nocapture, readonly.
 // #107436
 //@ compile-flags: -O
-//@ min-llvm-version: 17
 
 #![crate_type = "lib"]
 

tests/codegen/trailing_zeros.rs

@@ -1,5 +1,4 @@
 //@ compile-flags: -O
-//@ min-llvm-version: 17
 
 #![crate_type = "lib"]
 

tests/codegen/vec-shrink-panik.rs

@@ -1,8 +1,5 @@
-//@ revisions: old new
 // LLVM 17 realizes double panic is not possible and doesn't generate calls
 // to panic_cannot_unwind.
-//@ [old]ignore-llvm-version: 17 - 99
-//@ [new]min-llvm-version: 17
 //@ compile-flags: -O
 //@ ignore-debug: plain old debug assertions
 //@ needs-unwind
@@ -22,14 +19,6 @@ pub fn shrink_to_fit(vec: &mut Vec<u32>) {
 // CHECK-LABEL: @issue71861
 #[no_mangle]
 pub fn issue71861(vec: Vec<u32>) -> Box<[u32]> {
-    // CHECK-NOT: panic
-
-    // Call to panic_cannot_unwind in case of double-panic is expected
-    // on LLVM 16 and older, but other panics are not.
-    // old: filter
-    // old-NEXT: ; call core::panicking::panic_cannot_unwind
-    // old-NEXT: panic_cannot_unwind
-
     // CHECK-NOT: panic
     vec.into_boxed_slice()
 }
@@ -40,6 +29,3 @@ pub fn issue75636<'a>(iter: &[&'a str]) -> Box<[&'a str]> {
     // CHECK-NOT: panic
     iter.iter().copied().collect()
 }
-
-// old: ; core::panicking::panic_cannot_unwind
-// old: declare void @{{.*}}panic_cannot_unwind

tests/run-make/lto-linkage-used-attr/Makefile

@@ -2,7 +2,6 @@ include ../tools.mk
 
 # Verify that the impl_* symbols are preserved. #108030
 # only-x86_64-unknown-linux-gnu
-# min-llvm-version: 17
 
 all:
 	$(RUSTC) -Cdebuginfo=0 -Copt-level=3 lib.rs

tests/ui/codegen/target-cpus.rs

@@ -1,4 +1,3 @@
 //@ needs-llvm-components: webassembly
-//@ min-llvm-version: 17
 //@ compile-flags: --print=target-cpus --target=wasm32-unknown-unknown
 //@ check-pass