Bump mir-opt-level from 3 to 4 in tests

Author: spastorino

src/test/codegen/sanitizer-no-sanitize-inlining.rs

@@ -4,8 +4,8 @@
 // needs-sanitizer-address
 // needs-sanitizer-leak
 // revisions: ASAN LSAN
-//[ASAN] compile-flags: -Zsanitizer=address -C opt-level=3 -Z mir-opt-level=3
-//[LSAN] compile-flags: -Zsanitizer=leak    -C opt-level=3 -Z mir-opt-level=3
+//[ASAN] compile-flags: -Zsanitizer=address -C opt-level=3 -Z mir-opt-level=4
+//[LSAN] compile-flags: -Zsanitizer=leak    -C opt-level=3 -Z mir-opt-level=4
 
 #![crate_type="lib"]
 #![feature(no_sanitize)]

src/test/mir-opt/const_prop/boolean_identities.rs

@@ -1,4 +1,4 @@
-// compile-flags: -O -Zmir-opt-level=3
+// compile-flags: -O -Zmir-opt-level=4
 
 // EMIT_MIR boolean_identities.test.ConstProp.diff
 pub fn test(x: bool, y: bool) -> bool {

src/test/mir-opt/const_prop/mult_by_zero.rs

@@ -1,4 +1,4 @@
-// compile-flags: -O -Zmir-opt-level=3
+// compile-flags: -O -Zmir-opt-level=4
 
 // EMIT_MIR mult_by_zero.test.ConstProp.diff
 fn test(x : i32) -> i32 {

src/test/mir-opt/early_otherwise_branch.rs

@@ -1,4 +1,4 @@
-// compile-flags: -Z mir-opt-level=3
+// compile-flags: -Z mir-opt-level=4
 // EMIT_MIR early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
 fn opt1(x: Option<u32>, y: Option<u32>) -> u32 {
     match (x, y) {

src/test/mir-opt/early_otherwise_branch_3_element_tuple.rs

@@ -1,4 +1,4 @@
-// compile-flags: -Z mir-opt-level=3
+// compile-flags: -Z mir-opt-level=4
 
 // EMIT_MIR early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
 fn opt1(x: Option<u32>, y: Option<u32>, z: Option<u32>) -> u32 {

src/test/mir-opt/early_otherwise_branch_68867.rs

@@ -1,5 +1,5 @@
 // ignore-tidy-linelength
-// compile-flags: -Z mir-opt-level=3 -Zunsound-mir-opts
+// compile-flags: -Z mir-opt-level=4 -Zunsound-mir-opts
 
 // example from #68867
 type CSSFloat = f32;

src/test/mir-opt/early_otherwise_branch_noopt.rs

@@ -1,4 +1,4 @@
-// compile-flags: -Z mir-opt-level=3
+// compile-flags: -Z mir-opt-level=4
 
 // must not optimize as it does not follow the pattern of
 // left and right hand side being the same variant

src/test/mir-opt/inline/inline-into-box-place.rs

@@ -1,6 +1,6 @@
 // ignore-endian-big
 // ignore-wasm32-bare compiled with panic=abort by default
-// compile-flags: -Z mir-opt-level=3
+// compile-flags: -Z mir-opt-level=4
 // EMIT_MIR_FOR_EACH_BIT_WIDTH
 #![feature(box_syntax)]
 // EMIT_MIR inline_into_box_place.main.Inline.diff

src/test/mir-opt/inline/inline-trait-method_2.rs

@@ -1,4 +1,4 @@
-// compile-flags: -Z span_free_formats -Z mir-opt-level=3
+// compile-flags: -Z span_free_formats -Z mir-opt-level=4
 
 // EMIT_MIR inline_trait_method_2.test2.Inline.after.mir
 fn test2(x: &dyn X) -> bool {

src/test/mir-opt/multiple_return_terminators.rs

@@ -1,4 +1,4 @@
-// compile-flags: -Z mir-opt-level=3
+// compile-flags: -Z mir-opt-level=4
 // EMIT_MIR multiple_return_terminators.test.MultipleReturnTerminators.diff
 
 fn test(x: bool) {