Include frame pointer for bare metal RISC-V targets

src/librustc_target/spec/riscv32imac_unknown_none_elf.rs

@@ -25,6 +25,7 @@ pub fn target() -> TargetResult {
             relocation_model: "static".to_string(),
             emit_debug_gdb_scripts: false,
             abi_blacklist: super::riscv_base::abi_blacklist(),
+            eliminate_frame_pointer: false,
             .. Default::default()
         },
     })

src/librustc_target/spec/riscv32imc_unknown_none_elf.rs

@@ -26,6 +26,7 @@ pub fn target() -> TargetResult {
             relocation_model: "static".to_string(),
             emit_debug_gdb_scripts: false,
             abi_blacklist: super::riscv_base::abi_blacklist(),
+            eliminate_frame_pointer: false,
             .. Default::default()
         },
     })

src/librustc_target/spec/riscv64gc_unknown_none_elf.rs

@@ -25,6 +25,7 @@ pub fn target() -> TargetResult {
             relocation_model: "static".to_string(),
             emit_debug_gdb_scripts: false,
             abi_blacklist: super::riscv_base::abi_blacklist(),
+            eliminate_frame_pointer: false,
             .. Default::default()
         },
     })

src/librustc_target/spec/riscv64imac_unknown_none_elf.rs

@@ -25,6 +25,7 @@ pub fn target() -> TargetResult {
             relocation_model: "static".to_string(),
             emit_debug_gdb_scripts: false,
             abi_blacklist: super::riscv_base::abi_blacklist(),
+            eliminate_frame_pointer: false,
             .. Default::default()
         },
     })