Update the minimum external LLVM to 8

LLVM 8 was released on March 20, 2019, over a year ago.

src/test/codegen/enum-debug-clike.rs

@@ -1,18 +1,13 @@
-// This test depends on a patch that was committed to upstream LLVM
-// before 7.0, then backported to the Rust LLVM fork.  It tests that
-// debug info for "c-like" enums is properly emitted.
+// This tests that debug info for "c-like" enums is properly emitted.
+// This is ignored for the fallback mode on MSVC due to problems with PDB.
 
 // ignore-tidy-linelength
-// ignore-windows
-// min-system-llvm-version 8.0
+// ignore-msvc
 
 // compile-flags: -g -C no-prepopulate-passes
 
-// DIFlagFixedEnum was deprecated in 8.0, renamed to DIFlagEnumClass.
-// We match either for compatibility.
-
 // CHECK-LABEL: @main
-// CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_enumeration_type,{{.*}}name: "E",{{.*}}flags: {{(DIFlagEnumClass|DIFlagFixedEnum)}},{{.*}}
+// CHECK: {{.*}}DICompositeType{{.*}}tag: DW_TAG_enumeration_type,{{.*}}name: "E",{{.*}}flags: DIFlagEnumClass,{{.*}}
 // CHECK: {{.*}}DIEnumerator{{.*}}name: "A",{{.*}}value: {{[0-9].*}}
 // CHECK: {{.*}}DIEnumerator{{.*}}name: "B",{{.*}}value: {{[0-9].*}}
 // CHECK: {{.*}}DIEnumerator{{.*}}name: "C",{{.*}}value: {{[0-9].*}}

src/test/codegen/enum-debug-niche-2.rs

@@ -1,10 +1,8 @@
-// This test depends on a patch that was committed to upstream LLVM
-// before 7.0, then backported to the Rust LLVM fork.  It tests that
-// optimized enum debug info accurately reflects the enum layout.
+// This tests that optimized enum debug info accurately reflects the enum layout.
+// This is ignored for the fallback mode on MSVC due to problems with PDB.
 
 // ignore-tidy-linelength
-// ignore-windows
-// min-system-llvm-version 8.0
+// ignore-msvc
 
 // compile-flags: -g -C no-prepopulate-passes
 

src/test/codegen/enum-debug-niche.rs

@@ -1,9 +1,7 @@
-// This test depends on a patch that was committed to upstream LLVM
-// before 7.0, then backported to the Rust LLVM fork.  It tests that
-// optimized enum debug info accurately reflects the enum layout.
+// This tests that optimized enum debug info accurately reflects the enum layout.
+// This is ignored for the fallback mode on MSVC due to problems with PDB.
 
-// ignore-windows
-// min-system-llvm-version 8.0
+// ignore-msvc
 
 // compile-flags: -g -C no-prepopulate-passes
 

src/test/codegen/enum-debug-tagged.rs

@@ -1,9 +1,7 @@
-// This test depends on a patch that was committed to upstream LLVM
-// before 7.0, then backported to the Rust LLVM fork.  It tests that
-// debug info for tagged (ordinary) enums is properly emitted.
+// This tests that debug info for tagged (ordinary) enums is properly emitted.
+// This is ignored for the fallback mode on MSVC due to problems with PDB.
 
-// ignore-windows
-// min-system-llvm-version 8.0
+// ignore-msvc
 
 // compile-flags: -g -C no-prepopulate-passes
 

src/test/codegen/force-frame-pointers.rs

@@ -1,4 +1,3 @@
-// min-llvm-version 8.0
 // compile-flags: -C no-prepopulate-passes -C force-frame-pointers=y
 
 #![crate_type="lib"]

src/test/codegen/instrument-mcount.rs

@@ -1,4 +1,3 @@
-// min-llvm-version 8.0
 // ignore-tidy-linelength
 // compile-flags: -Z instrument-mcount
 

src/test/debuginfo/borrowed-enum.rs

@@ -1,7 +1,6 @@
 // ignore-tidy-linelength
 
-// Require LLVM with DW_TAG_variant_part and a gdb or lldb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb or lldb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 // rust-lldb
 

src/test/debuginfo/enum-thinlto.rs

@@ -1,5 +1,4 @@
-// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 
 // compile-flags:-g -Z thinlto

src/test/debuginfo/generator-objects.rs

@@ -1,7 +1,6 @@
 // ignore-tidy-linelength
 
-// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 
 // compile-flags:-g

src/test/debuginfo/generic-enum-with-different-disr-sizes.rs

@@ -1,8 +1,7 @@
 // ignore-lldb: FIXME(#27089)
 // min-lldb-version: 310
 
-// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 
 // compile-flags:-g

src/test/debuginfo/generic-struct-style-enum.rs

@@ -1,8 +1,7 @@
 // ignore-tidy-linelength
 // min-lldb-version: 310
 
-// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 
 // compile-flags:-g

src/test/debuginfo/generic-tuple-style-enum.rs

@@ -1,8 +1,6 @@
 // ignore-tidy-linelength
 
-// Require LLVM with DW_TAG_variant_part and a gdb and lldb that can
-// read it.
-// min-system-llvm-version: 8.0
+// Require a gdb or lldb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 // rust-lldb
 

src/test/debuginfo/issue-57822.rs

@@ -1,8 +1,7 @@
 // This test makes sure that the LLDB pretty printer does not throw an exception
 // for nested closures and generators.
 
-// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 // ignore-tidy-linelength
 

src/test/debuginfo/recursive-struct.rs

@@ -1,7 +1,6 @@
 // ignore-lldb
 
-// Require LLVM with DW_TAG_variant_part and a gdb that can read it.
-// min-system-llvm-version: 8.0
+// Require a gdb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 
 // compile-flags:-g

src/test/debuginfo/struct-style-enum.rs

@@ -1,8 +1,6 @@
 // ignore-tidy-linelength
 
-// Require LLVM with DW_TAG_variant_part and a gdb and lldb that can
-// read it.
-// min-system-llvm-version: 8.0
+// Require a gdb or lldb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 // rust-lldb
 

src/test/debuginfo/tuple-style-enum.rs

@@ -1,8 +1,6 @@
 // ignore-tidy-linelength
 
-// Require LLVM with DW_TAG_variant_part and a gdb and lldb that can
-// read it.
-// min-system-llvm-version: 8.0
+// Require a gdb or lldb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 // rust-lldb
 

src/test/debuginfo/unique-enum.rs

@@ -1,6 +1,4 @@
-// Require LLVM with DW_TAG_variant_part and a gdb and lldb that can
-// read it.
-// min-system-llvm-version: 8.0
+// Require a gdb or lldb that can read DW_TAG_variant_part.
 // min-gdb-version: 8.2
 // rust-lldb
 

src/test/ui/simd/simd-intrinsic-generic-arithmetic-saturating.rs

@@ -1,6 +1,5 @@
 // run-pass
 // ignore-emscripten
-// min-llvm-version 8.0
 
 #![allow(non_camel_case_types)]
 #![feature(repr_simd, platform_intrinsics)]