pulley: Fix trap opcode encoding (#9643)

* pulley: Fix trap opcode encoding

This was a copy/paste typo and needs updating.

* Fix test expectations

* Fix more test expectations

Author: alexcrichton

cranelift/codegen/src/isa/pulley_shared/inst/mod.rs

@@ -309,7 +309,7 @@ where
     type LabelUse = LabelUse;
     type ABIMachineSpec = PulleyMachineDeps<P>;
 
-    const TRAP_OPCODE: &'static [u8] = &[0];
+    const TRAP_OPCODE: &'static [u8] = TRAP_OPCODE;
 
     fn gen_dummy_use(_reg: Reg) -> Self {
         todo!()
@@ -468,6 +468,19 @@ where
     }
 }
 
+const TRAP_OPCODE: &'static [u8] = &[
+    pulley_interpreter::opcode::Opcode::ExtendedOp as u8,
+    ((pulley_interpreter::opcode::ExtendedOpcode::Trap as u16) >> 0) as u8,
+    ((pulley_interpreter::opcode::ExtendedOpcode::Trap as u16) >> 8) as u8,
+];
+
+#[test]
+fn test_trap_encoding() {
+    let mut dst = std::vec::Vec::new();
+    pulley_interpreter::encode::trap(&mut dst);
+    assert_eq!(dst, TRAP_OPCODE);
+}
+
 //=============================================================================
 // Pretty-printing of instructions.
 

cranelift/filetests/filetests/isa/pulley32/trap.clif

@@ -31,7 +31,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0b 00 02 08 00 00 00            br_if_xeq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapz(i64) {
 block0(v0: i64):
@@ -51,7 +51,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0c 00 02 08 00 00 00            br_if_xneq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapnz_icmp_fold(i64) {
 block0(v0: i64):
@@ -71,7 +71,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0b 00 02 08 00 00 00            br_if_xeq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapz_icmp_fold(i64) {
 block0(v0: i64):
@@ -91,7 +91,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0c 00 02 08 00 00 00            br_if_xneq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapnz_iconst_fold(i64) {
 block0(v0: i64):
@@ -126,7 +126,7 @@ block2:
 ;        a: 14 06 00                        xconst8 x6, 0
 ;        d: 0c 05 06 08 00 00 00            br_if_xneq64 x5, x6, 0x8    // target = 0x15
 ;       14: 00                              ret
-;       15: 00                              ret
+;       15: 43 00 00                        trap
 
 function %trapz_iconst_fold(i64) {
 block0(v0: i64):
@@ -161,5 +161,5 @@ block2:
 ;        c: 0b 04 05 09 00 00 00            br_if_xeq64 x4, x5, 0x9    // target = 0x15
 ;       13: 00                              ret
 ;       14: 00                              ret
-;       15: 00                              ret
+;       15: 43 00 00                        trap
 

cranelift/filetests/filetests/isa/pulley64/trap.clif

@@ -31,7 +31,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0b 00 02 08 00 00 00            br_if_xeq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapz(i64) {
 block0(v0: i64):
@@ -51,7 +51,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0c 00 02 08 00 00 00            br_if_xneq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapnz_icmp_fold(i64) {
 block0(v0: i64):
@@ -71,7 +71,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0b 00 02 08 00 00 00            br_if_xeq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapz_icmp_fold(i64) {
 block0(v0: i64):
@@ -91,7 +91,7 @@ block0(v0: i64):
 ;        0: 14 02 2a                        xconst8 x2, 42
 ;        3: 0c 00 02 08 00 00 00            br_if_xneq64 x0, x2, 0x8    // target = 0xb
 ;        a: 00                              ret
-;        b: 00                              ret
+;        b: 43 00 00                        trap
 
 function %trapnz_iconst_fold(i64) {
 block0(v0: i64):
@@ -126,7 +126,7 @@ block2:
 ;        a: 14 06 00                        xconst8 x6, 0
 ;        d: 0c 05 06 08 00 00 00            br_if_xneq64 x5, x6, 0x8    // target = 0x15
 ;       14: 00                              ret
-;       15: 00                              ret
+;       15: 43 00 00                        trap
 
 function %trapz_iconst_fold(i64) {
 block0(v0: i64):
@@ -161,5 +161,5 @@ block2:
 ;        c: 0b 04 05 09 00 00 00            br_if_xeq64 x4, x5, 0x9    // target = 0x15
 ;       13: 00                              ret
 ;       14: 00                              ret
-;       15: 00                              ret
+;       15: 43 00 00                        trap
 

tests/disas/pulley/loads.wat

@@ -31,7 +31,7 @@
 ;;       xconst8 spilltmp0, 16
 ;;       xadd32 sp, sp, spilltmp0
 ;;       ret
-;;   33: ret
+;;   33: trap
 ;;
 ;; wasm[0]::function[1]::i64:
 ;;       xconst8 spilltmp0, -16
@@ -49,4 +49,4 @@
 ;;       xconst8 spilltmp0, 16
 ;;       xadd32 sp, sp, spilltmp0
 ;;       ret
-;;   33: ret
+;;   33: trap