Rollup merge of rust-lang#147925 - fneddy:fix_big_endian_GVN_tests, r=saethlin

Fix tests for big-endian The tests fail on s390x and presumably other big-endian systems, due to check of raw alloc values in the MIR output. To fix the tests remove the raw bytes from the MIR output (via: compile-flags: -Zdump-mir-exclude-alloc-bytes) and update the matching diffs.

Author: Zalathar

tests/mir-opt/const_prop/invalid_constant.main.GVN.diff

@@ -61,17 +61,11 @@
  StorageDead(_1);
  return;
  }
-+ }
+  }
 + 
-+ ALLOC0 (size: 4, align: 4) {
-+ 00 00 00 00 │ ....
-+ }
++ ALLOC0 (size: 4, align: 4) { .. }
 + 
-+ ALLOC1 (size: 4, align: 4) {
-+ 04 00 00 00 │ ....
-+ }
++ ALLOC1 (size: 4, align: 4) { .. }
 + 
-+ ALLOC2 (size: 4, align: 4) {
-+ 01 00 11 00 │ ....
- }
++ ALLOC2 (size: 4, align: 4) { .. }
 

tests/mir-opt/const_prop/invalid_constant.rs

@@ -1,6 +1,6 @@
 // skip-filecheck
 //@ test-mir-pass: GVN
-//@ compile-flags: -Zmir-enable-passes=+RemoveZsts
+//@ compile-flags: -Zmir-enable-passes=+RemoveZsts -Zdump-mir-exclude-alloc-bytes
 // Verify that we can pretty print invalid constants.
 
 #![feature(adt_const_params, unsized_const_params)]

tests/mir-opt/const_prop/union.main.GVN.diff

@@ -34,9 +34,7 @@
  StorageDead(_1);
  return;
  }
-+ }
-+ 
-+ ALLOC0 (size: 4, align: 4) {
-+ 01 00 00 00 │ ....
  }
++ 
++ ALLOC0 (size: 4, align: 4) { .. }
 

tests/mir-opt/const_prop/union.rs

@@ -1,6 +1,6 @@
 //! Tests that we can propagate into places that are projections into unions
 //@ test-mir-pass: GVN
-//@ compile-flags: -Zinline-mir
+//@ compile-flags: -Zinline-mir -Zdump-mir-exclude-alloc-bytes
 
 fn val() -> u32 {
  1

tests/mir-opt/gvn_loop.loop_deref_mut.GVN.diff

@@ -107,9 +107,7 @@
  StorageDead(_11);
  goto -> bb4;
  }
-+ }
-+ 
-+ ALLOC0 (size: 8, align: 4) {
-+ 01 00 00 00 __ __ __ __ │ ....░░░░
  }
++ 
++ ALLOC0 (size: 8, align: 4) { .. }
 

tests/mir-opt/gvn_loop.rs

@@ -1,4 +1,5 @@
 //@ test-mir-pass: GVN
+//@ compile-flags: -Zdump-mir-exclude-alloc-bytes
 
 #![crate_type = "lib"]
 #![feature(core_intrinsics, rustc_attrs)]