Describe stack-id as an enum

This patch changes MIR stack-id from an integer to an enum,
and adds printing/parsing support for this in MIR files. The default
stack-id '0' is now renamed to 'default'.

This should make MIR tests that have stack objects with different stack-ids
more descriptive. It also clarifies code operating on StackID.

Reviewers: arsenm, thegameg, qcolombet

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D60137

llvm-svn: 363533

7 files changed, 17 insertions, 17 deletions

diff --git a/llvm/test/CodeGen/MIR/X86/branch-folder-with-label.mir b/llvm/test/CodeGen/MIR/X86/branch-folder-with-label.mir
index 922568408e4..0552c5895ba 100644
--- a/llvm/test/CodeGen/MIR/X86/branch-folder-with-label.mir
+++ b/llvm/test/CodeGen/MIR/X86/branch-folder-with-label.mir
@@ -218,7 +218,7 @@ frameInfo:
   savePoint:       ''
   restorePoint:    ''
 fixedStack:      
-  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: 0, 
+  - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
       callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '', 
       debug-info-expression: '', debug-info-location: '' }
 stack:           
@@ -292,15 +292,15 @@ frameInfo:
   savePoint:       ''
   restorePoint:    ''
 fixedStack:      
-  - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: 0, 
+  - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default,
       callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '', 
       debug-info-expression: '', debug-info-location: '' }
-  - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: 0, 
+  - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
       callee-saved-register: '$r14', callee-saved-restored: true, debug-info-variable: '', 
       debug-info-expression: '', debug-info-location: '' }
 stack:           
   - { id: 0, name: idx, type: default, offset: -28, size: 4, alignment: 4, 
-      stack-id: 0, callee-saved-register: '', callee-saved-restored: true, 
+      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
       debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
 constants:       
 body:             |
diff --git a/llvm/test/CodeGen/MIR/X86/diexpr-win32.mir b/llvm/test/CodeGen/MIR/X86/diexpr-win32.mir
index 65652ba8948..a12fdea0a17 100644
--- a/llvm/test/CodeGen/MIR/X86/diexpr-win32.mir
+++ b/llvm/test/CodeGen/MIR/X86/diexpr-win32.mir
@@ -177,11 +177,11 @@ frameInfo:
   savePoint:       ''
   restorePoint:    ''
 fixedStack:
-  - { id: 0, type: spill-slot, offset: -8, size: 4, alignment: 4, stack-id: 0,
+  - { id: 0, type: spill-slot, offset: -8, size: 4, alignment: 4, stack-id: default,
       callee-saved-register: '$esi' }
-  - { id: 1, type: default, offset: 4, size: 4, alignment: 4, stack-id: 0,
+  - { id: 1, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
       isImmutable: true, isAliased: false, callee-saved-register: '' }
-  - { id: 2, type: default, offset: 0, size: 4, alignment: 4, stack-id: 0,
+  - { id: 2, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,
       isImmutable: true, isAliased: false, callee-saved-register: '' }
 stack:
 constants:
@@ -235,9 +235,9 @@ frameInfo:
   savePoint:       ''
   restorePoint:    ''
 fixedStack:
-  - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: 0,
+  - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
       isImmutable: true, isAliased: false, callee-saved-register: '' }
-  - { id: 1, type: default, offset: 0, size: 4, alignment: 4, stack-id: 0,
+  - { id: 1, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,
       isImmutable: true, isAliased: false, callee-saved-register: '' }
 stack:
 constants:
diff --git a/llvm/test/CodeGen/MIR/X86/fixed-stack-di.mir b/llvm/test/CodeGen/MIR/X86/fixed-stack-di.mir
index 209ed3e43bf..c834ba056c1 100644
--- a/llvm/test/CodeGen/MIR/X86/fixed-stack-di.mir
+++ b/llvm/test/CodeGen/MIR/X86/fixed-stack-di.mir
@@ -34,7 +34,7 @@ tracksRegLiveness: true
 frameInfo:
   maxAlignment:    8
 fixedStack:
-  - { id: 0, size: 4, alignment: 16, stack-id: 0, debug-info-variable: '!3', debug-info-expression: '!DIExpression()',
+  - { id: 0, size: 4, alignment: 16, stack-id: default, debug-info-variable: '!3', debug-info-expression: '!DIExpression()',
       debug-info-location: '!5' }
 body:             |
   bb.0.entry:
diff --git a/llvm/test/CodeGen/MIR/X86/fixed-stack-objects.mir b/llvm/test/CodeGen/MIR/X86/fixed-stack-objects.mir
index 12917fde1d7..0bb829d2526 100644
--- a/llvm/test/CodeGen/MIR/X86/fixed-stack-objects.mir
+++ b/llvm/test/CodeGen/MIR/X86/fixed-stack-objects.mir
@@ -20,7 +20,7 @@ frameInfo:
   stackSize:       4
   maxAlignment:    4
 # CHECK: fixedStack:
-# CHECK-NEXT: - { id: 0, type: default, offset: 0, size: 4, alignment: 4, stack-id: 0
+# CHECK-NEXT: - { id: 0, type: default, offset: 0, size: 4, alignment: 4, stack-id: default
 # CHECK-NEXT: isImmutable: true,
 fixedStack:
   - { id: 0, offset: 0, size: 4, alignment: 4, isImmutable: true, isAliased: false }
diff --git a/llvm/test/CodeGen/MIR/X86/spill-slot-fixed-stack-objects.mir b/llvm/test/CodeGen/MIR/X86/spill-slot-fixed-stack-objects.mir
index b5a6edb3bab..40b17c68e83 100644
--- a/llvm/test/CodeGen/MIR/X86/spill-slot-fixed-stack-objects.mir
+++ b/llvm/test/CodeGen/MIR/X86/spill-slot-fixed-stack-objects.mir
@@ -19,7 +19,7 @@ name:            test
 frameInfo:
   maxAlignment:    4
 # CHECK: fixedStack:
-# CHECK-NEXT: - { id: 0, type: spill-slot, offset: 0, size: 4, alignment: 4, stack-id: 0,
+# CHECK-NEXT: - { id: 0, type: spill-slot, offset: 0, size: 4, alignment: 4, stack-id: default,
 # CHECK-NEXT: callee-saved-register: '', callee-saved-restored: true, debug-info-variable: '',
 # CHECK-NEXT: debug-info-expression: '', debug-info-location: '' }
 fixedStack:
diff --git a/llvm/test/CodeGen/MIR/X86/stack-objects.mir b/llvm/test/CodeGen/MIR/X86/stack-objects.mir
index 0e2debe8be9..12bcb24145c 100644
--- a/llvm/test/CodeGen/MIR/X86/stack-objects.mir
+++ b/llvm/test/CodeGen/MIR/X86/stack-objects.mir
@@ -22,13 +22,13 @@ frameInfo:
   maxAlignment:    8
 # CHECK: stack:
 # CHECK-NEXT: - { id: 0, name: b, type: default, offset: -12, size: 4, alignment: 4,
-# CHECK-NEXT: stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
+# CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
 # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
 # CHECK-NEXT: - { id: 1, name: x, type: default, offset: -24, size: 8, alignment: 8,
-# CHECK-NEXT: stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
+# CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
 # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
 # CHECK-NEXT: - { id: 2, name: '', type: spill-slot, offset: -32, size: 4, alignment: 4,
-# CHECK-NEXT: stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
+# CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
 # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
 stack:
   - { id: 0, name: b, offset: -12, size: 4, alignment: 4 }
diff --git a/llvm/test/CodeGen/MIR/X86/variable-sized-stack-objects.mir b/llvm/test/CodeGen/MIR/X86/variable-sized-stack-objects.mir
index b8a8e599a6a..e251ddac5f3 100644
--- a/llvm/test/CodeGen/MIR/X86/variable-sized-stack-objects.mir
+++ b/llvm/test/CodeGen/MIR/X86/variable-sized-stack-objects.mir
@@ -25,10 +25,10 @@ frameInfo:
   adjustsStack:    true
 # CHECK: stack:
 # CHECK-NEXT: - { id: 0, name: '', type: default, offset: -20, size: 4, alignment: 4,
-# CHECK-NEXT:  stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
+# CHECK-NEXT:  stack-id: default, callee-saved-register: '', callee-saved-restored: true,
 # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
 # CHECK-NEXT: - { id: 1, name: '', type: default, offset: -32, size: 8, alignment: 8,
-# CHECK-NEXT:  stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
+# CHECK-NEXT:  stack-id: default, callee-saved-register: '', callee-saved-restored: true,
 # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
 # CHECK-NEXT: - { id: 2, name: y, type: variable-sized, offset: -32, alignment: 1,
 stack: