Merged master:b2f663073917 into amd-gfx:ada90d0b5123

Local branch amd-gfx ada90d0 Merged master:0fd04337a171 into amd-gfx:8b48af57af1b
Remote branch master b2f6630 [PowerPC] Allow a '%' prefix for registers in CFI directives

lld/test/wasm/undefined-data.s

@@ -0,0 +1,15 @@
+# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
+# RUN: not wasm-ld -o %t.wasm %t.o 2>&1 | FileCheck %s -check-prefix=UNDEF
+# RUN: wasm-ld --allow-undefined -o %t.wasm %t.o
+# RUN: not wasm-ld --shared -o %t.wasm %t.o 2>&1 | FileCheck %s -check-prefix=SHARED
+
+.globl  _start
+_start:
+  .functype _start () -> (i32)
+  i32.load  data_external
+  end_function
+
+.size data_external, 4
+
+# UNDEF: error: {{.*}}undefined-data.s.tmp.o: undefined symbol: data_external
+# SHARED: error: {{.*}}undefined-data.s.tmp.o: relocation R_WASM_MEMORY_ADDR_LEB cannot be used against symbol data_external; recompile with -fPIC

lld/test/wasm/undefined-weak-call.s

@@ -0,0 +1,108 @@
+# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
+# RUN: wasm-ld --entry=callWeakFuncs --print-gc-sections %t.o \
+# RUN:     -o %t.wasm 2>&1 | FileCheck -check-prefix=CHECK-GC %s
+# RUN: obj2yaml %t.wasm | FileCheck %s
+
+
+# Check that calling an undefined weak function generates an appropriate stub
+# that will fail at runtime with "unreachable".
+
+.globl  callWeakFuncs
+
+callWeakFuncs:
+  .functype callWeakFuncs () -> (i32)
+  call  weakFunc1
+  call  weakFunc2
+  i32.const 2
+  call  weakFunc3
+  i32.const weakFunc1
+  i32.const weakFunc4
+  i32.add
+  end_function
+
+.weak weakFunc1
+.weak weakFunc2
+.weak weakFunc3
+.weak weakFunc4
+.functype weakFunc1 () -> ()
+.functype weakFunc2 () -> ()
+.functype weakFunc3 (i32) -> ()
+.functype weakFunc4 () -> ()
+
+# CHECK-GC: removing unused section {{.*}}:(weakFunc4)
+
+# CHECK:      --- !WASM
+# CHECK-NEXT: FileHeader:
+# CHECK-NEXT:   Version:         0x1
+# CHECK-NEXT: Sections:
+# CHECK-NEXT:   - Type:            TYPE
+# CHECK-NEXT:     Signatures:
+# CHECK-NEXT:       - Index:           0
+# CHECK-NEXT:         ParamTypes:
+# CHECK-NEXT:         ReturnTypes:     []
+# CHECK-NEXT:       - Index:           1
+# CHECK-NEXT:         ParamTypes:
+# CHECK-NEXT:           - I32
+# CHECK-NEXT:         ReturnTypes:     []
+# CHECK-NEXT:       - Index:           2
+# CHECK-NEXT:         ParamTypes:
+# CHECK-NEXT:         ReturnTypes:
+# CHECK-NEXT:           - I32
+# CHECK-NEXT:   - Type:            FUNCTION
+# CHECK-NEXT:     FunctionTypes:   [ 0, 0, 1, 2 ]
+# CHECK-NEXT:   - Type:            TABLE
+# CHECK-NEXT:     Tables:
+# CHECK-NEXT:       - Index:           0
+# CHECK-NEXT:         ElemType:        FUNCREF
+# CHECK-NEXT:         Limits:
+# CHECK-NEXT:           Flags:           [ HAS_MAX ]
+# CHECK-NEXT:           Initial:         0x1
+# CHECK-NEXT:           Maximum:         0x1
+# CHECK-NEXT:   - Type:            MEMORY
+# CHECK-NEXT:     Memories:
+# CHECK-NEXT:       - Initial:         0x2
+# CHECK-NEXT:   - Type:            GLOBAL
+# CHECK-NEXT:     Globals:
+# CHECK-NEXT:       - Index:           0
+# CHECK-NEXT:         Type:            I32
+# CHECK-NEXT:         Mutable:         true
+# CHECK-NEXT:         InitExpr:
+# CHECK-NEXT:           Opcode:          I32_CONST
+# CHECK-NEXT:           Value:           66560
+# CHECK-NEXT:   - Type:            EXPORT
+# CHECK-NEXT:     Exports:
+# CHECK-NEXT:       - Name:            memory
+# CHECK-NEXT:         Kind:            MEMORY
+# CHECK-NEXT:         Index:           0
+# CHECK-NEXT:       - Name:            callWeakFuncs
+# CHECK-NEXT:         Kind:            FUNCTION
+# CHECK-NEXT:         Index:           3
+# CHECK-NEXT:   - Type:            CODE
+# CHECK-NEXT:     Functions:
+# CHECK-NEXT:       - Index:           0
+# CHECK-NEXT:         Locals:
+# CHECK-NEXT:         Body:            000B
+# CHECK-NEXT:       - Index:           1
+# CHECK-NEXT:         Locals:
+# CHECK-NEXT:         Body:            000B
+# CHECK-NEXT:       - Index:           2
+# CHECK-NEXT:         Locals:
+# CHECK-NEXT:         Body:            000B
+# CHECK-NEXT:       - Index:           3
+# CHECK-NEXT:         Locals:
+# CHECK-NEXT:         Body:            10808080800010818080800041021082808080004180808080004180808080006A0B
+# CHECK-NEXT:   - Type:            CUSTOM
+# CHECK-NEXT:     Name:            name
+# CHECK-NEXT:     FunctionNames:
+# CHECK-NEXT:       - Index:           0
+# CHECK-NEXT:         Name:            'undefined_weak:weakFunc1'
+# CHECK-NEXT:       - Index:           1
+# CHECK-NEXT:         Name:            'undefined_weak:weakFunc2'
+# CHECK-NEXT:       - Index:           2
+# CHECK-NEXT:         Name:            'undefined_weak:weakFunc3'
+# CHECK-NEXT:       - Index:           3
+# CHECK-NEXT:         Name:            callWeakFuncs
+# CHECK-NEXT:     GlobalNames:
+# CHECK-NEXT:       - Index:           0
+# CHECK-NEXT:         Name:            __stack_pointer
+# CHECK-NEXT: ...