[AMDGPU][llvm-mc] Add support for sendmsg(...) syntax.

Added support for sendmsg(MSG[, OP[, STREAM_ID]]) syntax
in s_sendmsg and s_sendmsghalt instructions.
The syntax matches the SP3 assembler/disassembler rules.
That is why implicit inputs (like M0 and EXEC) are not printed
to disassembly output anymore.

sendmsg(...) allows only known message types and attributes,
even if literals are used instead of symbolic names.
However, raw literal (without "sendmsg") still can be used,
and that allows for any 16-bit value.

Tests updated/added.

Differential Revision: http://reviews.llvm.org/D19596

llvm-svn: 268762

5 files changed, 180 insertions, 9 deletions

diff --git a/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg-m0.ll b/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg-m0.ll
index e0a79482ddc..208d6b7f0ad 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg-m0.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg-m0.ll
@@ -4,7 +4,7 @@
 ; BOTH-LABEL: {{^}}main:
 ; BOTH: s_mov_b32 m0, s0
 ; VI-NEXT: s_nop 0
-; BOTH-NEXT: s_sendmsg Gs_done(nop)
+; BOTH-NEXT: sendmsg(MSG_GS_DONE, GS_OP_NOP)
 ; BOTH-NEXT: s_endpgm
 
 define amdgpu_gs void @main(i32 inreg %a) #0 {
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg.ll b/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg.ll
index 09675d50335..c4bb27676e7 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.SI.sendmsg.ll
@@ -4,10 +4,10 @@
 ; CHECK-LABEL: {{^}}main:
 ; CHECK: s_mov_b32 m0, 0
 ; CHECK-NOT: s_mov_b32 m0
-; CHECK: s_sendmsg Gs(emit stream 0)
-; CHECK: s_sendmsg Gs(cut stream 1)
-; CHECK: s_sendmsg Gs(emit-cut stream 2)
-; CHECK: s_sendmsg Gs_done(nop)
+; CHECK: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT, 0)
+; CHECK: s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 1)
+; CHECK: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT_CUT, 2)
+; CHECK: s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP)
 
 define void @main() {
 main_body:
diff --git a/llvm/test/MC/AMDGPU/sopp-err.s b/llvm/test/MC/AMDGPU/sopp-err.s
new file mode 100644
index 00000000000..6e037e03a04
--- /dev/null
+++ b/llvm/test/MC/AMDGPU/sopp-err.s
@@ -0,0 +1,75 @@
+// RUN: not llvm-mc -arch=amdgcn -show-encoding %s 2>&1 | FileCheck --check-prefix=GCN --check-prefix=SICI %s
+// RUN: not llvm-mc -arch=amdgcn -mcpu=SI -show-encoding %s 2>&1 | FileCheck --check-prefix=GCN --check-prefix=SICI %s
+// RUN: not llvm-mc -arch=amdgcn -mcpu=fiji -show-encoding %s 2>&1 | FileCheck --check-prefix=GCN --check-prefix=VI %s
+
+s_sendmsg sendmsg(11)
+// GCN: error: invalid/unsupported code of message
+
+s_sendmsg sendmsg(MSG_INTERRUPTX)
+// GCN: error: invalid/unsupported symbolic name of message
+
+s_sendmsg sendmsg(MSG_INTERRUPT, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(MSG_GS)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_NOP)
+// GCN: error: invalid GS_OP: NOP is for GS_DONE only
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 0, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(MSG_GSX, GS_OP_CUT, 0)
+// GCN: error: invalid/unsupported symbolic name of message
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_CUTX, 0)
+// GCN: error: invalid symbolic name of GS_OP
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 4)
+// GCN: error: invalid stream id: only 2-bit values are legal
+
+s_sendmsg sendmsg(2)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(2, 0)
+// GCN: error: invalid GS_OP: NOP is for GS_DONE only
+
+s_sendmsg sendmsg(2, 3, 0, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(2, 4, 1)
+// GCN: error: invalid code of GS_OP: only 2-bit values are legal
+
+s_sendmsg sendmsg(2, 2, 4)
+// GCN: error: invalid stream id: only 2-bit values are legal
+
+s_sendmsg sendmsg(2, 2, 0, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(15)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(15, 1, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(15, 0)
+// GCN: error: invalid/unsupported code of SYSMSG_OP
+
+s_sendmsg sendmsg(15, 5)
+// GCN: error: invalid/unsupported code of SYSMSG_OP
+
+s_sendmsg sendmsg(MSG_SYSMSG)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(MSG_SYSMSG, SYSMSG_OP_ECC_ERR_INTERRUPT, 0)
+// GCN: error: not a valid operand
+
+s_sendmsg sendmsg(MSG_SYSMSG, 0)
+// GCN: error: invalid/unsupported code of SYSMSG_OP
+
+s_sendmsg sendmsg(MSG_SYSMSG, 5)
+// GCN: error: invalid/unsupported code of SYSMSG_OP
diff --git a/llvm/test/MC/AMDGPU/sopp.s b/llvm/test/MC/AMDGPU/sopp.s
index fa920d41624..59de24533e0 100644
--- a/llvm/test/MC/AMDGPU/sopp.s
+++ b/llvm/test/MC/AMDGPU/sopp.s
@@ -91,10 +91,76 @@ s_setprio 1
 // GCN: s_setprio 1 ; encoding: [0x01,0x00,0x8f,0xbf]
 
 s_sendmsg 2
-// GCN: s_sendmsg Gs(nop), [m0] ; encoding: [0x02,0x00,0x90,0xbf]
+// GCN: s_sendmsg 2 ; encoding: [0x02,0x00,0x90,0xbf]
+
+s_sendmsg 0x1
+// GCN: s_sendmsg sendmsg(MSG_INTERRUPT) ; encoding: [0x01,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(1)
+// GCN: s_sendmsg sendmsg(MSG_INTERRUPT) ; encoding: [0x01,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(MSG_INTERRUPT)
+// GCN: s_sendmsg sendmsg(MSG_INTERRUPT) ; encoding: [0x01,0x00,0x90,0xbf]
+
+s_sendmsg 0x12
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 0) ; encoding: [0x12,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(2, 1)
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 0) ; encoding: [0x12,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 0)
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 0) ; encoding: [0x12,0x00,0x90,0xbf]
+
+s_sendmsg 0x122
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT, 1) ; encoding: [0x22,0x01,0x90,0xbf]
+
+s_sendmsg sendmsg(2, 2, 1)
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT, 1) ; encoding: [0x22,0x01,0x90,0xbf]
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT, 1)
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT, 1) ; encoding: [0x22,0x01,0x90,0xbf]
+
+s_sendmsg 0x232
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT_CUT, 2) ; encoding: [0x32,0x02,0x90,0xbf]
+
+s_sendmsg sendmsg(2, 3, 2)
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT_CUT, 2) ; encoding: [0x32,0x02,0x90,0xbf]
+
+s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT_CUT, 2)
+// GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT_CUT, 2) ; encoding: [0x32,0x02,0x90,0xbf]
+
+s_sendmsg 0x3
+// GCN: s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP) ; encoding: [0x03,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(3, 0)
+// GCN: s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP) ; encoding: [0x03,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP)
+// GCN: s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP) ; encoding: [0x03,0x00,0x90,0xbf]
+
+s_sendmsg 0x4
+// GCN: s_sendmsg 4 ; encoding: [0x04,0x00,0x90,0xbf]
+
+s_sendmsg 11
+// GCN: s_sendmsg 11 ; encoding: [0x0b,0x00,0x90,0xbf]
+
+s_sendmsg 0x1f
+// GCN: s_sendmsg sendmsg(MSG_SYSMSG, SYSMSG_OP_ECC_ERR_INTERRUPT) ; encoding: [0x1f,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(15, 1)
+// GCN: s_sendmsg sendmsg(MSG_SYSMSG, SYSMSG_OP_ECC_ERR_INTERRUPT) ; encoding: [0x1f,0x00,0x90,0xbf]
+
+s_sendmsg sendmsg(MSG_SYSMSG, SYSMSG_OP_ECC_ERR_INTERRUPT)
+// GCN: s_sendmsg sendmsg(MSG_SYSMSG, SYSMSG_OP_ECC_ERR_INTERRUPT) ; encoding: [0x1f,0x00,0x90,0xbf]
+
+s_sendmsg 0x6f
+// GCN: s_sendmsg 111 ; encoding: [0x6f,0x00,0x90,0xbf]
 
 s_sendmsghalt 3
-// GCN: s_sendmsghalt 3 ; encoding: [0x03,0x00,0x91,0xbf]
+// GCN: s_sendmsghalt sendmsg(MSG_GS_DONE, GS_OP_NOP) ; encoding: [0x03,0x00,0x91,0xbf]
+
+s_sendmsghalt sendmsg(MSG_GS, GS_OP_EMIT, 1)
+// GCN: s_sendmsghalt sendmsg(MSG_GS, GS_OP_EMIT, 1) ; encoding: [0x22,0x01,0x91,0xbf]
 
 s_trap 4
 // GCN: s_trap 4 ; encoding: [0x04,0x00,0x92,0xbf]
diff --git a/llvm/test/MC/Disassembler/AMDGPU/sopp_vi.txt b/llvm/test/MC/Disassembler/AMDGPU/sopp_vi.txt
index 2d8eab0230e..fb8b0e47c6b 100644
--- a/llvm/test/MC/Disassembler/AMDGPU/sopp_vi.txt
+++ b/llvm/test/MC/Disassembler/AMDGPU/sopp_vi.txt
@@ -75,12 +75,42 @@
 # GCN: s_setprio 1 ; encoding: [0x01,0x00,0x8f,0xbf]
 0x01 0x00 0x8f 0xbf
 
-# GCN: s_sendmsg Gs(nop), [m0] ; encoding: [0x02,0x00,0x90,0xbf]
+# GCN: s_sendmsg 2 ; encoding: [0x02,0x00,0x90,0xbf]
 0x02 0x00 0x90 0xbf
 
-# GCN: s_sendmsghalt 3 ; encoding: [0x03,0x00,0x91,0xbf]
+# GCN: s_sendmsg sendmsg(MSG_INTERRUPT) ; encoding: [0x01,0x00,0x90,0xbf]
+0x01 0x00 0x90 0xbf
+
+# GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_CUT, 0) ; encoding: [0x12,0x00,0x90,0xbf]
+0x12 0x00 0x90 0xbf
+
+# GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT, 1) ; encoding: [0x22,0x01,0x90,0xbf]
+0x22 0x01 0x90 0xbf
+
+# GCN: s_sendmsg sendmsg(MSG_GS, GS_OP_EMIT_CUT, 2) ; encoding: [0x32,0x02,0x90,0xbf]
+0x32 0x02 0x90 0xbf
+
+# GCN: s_sendmsg sendmsg(MSG_GS_DONE, GS_OP_NOP) ; encoding: [0x03,0x00,0x90,0xbf]
+0x03 0x00 0x90 0xbf
+
+# GCN: s_sendmsg 11 ; encoding: [0x0b,0x00,0x90,0xbf]
+0x0b 0x00 0x90 0xbf
+
+# GCN: s_sendmsg sendmsg(MSG_SYSMSG, SYSMSG_OP_ECC_ERR_INTERRUPT) ; encoding: [0x1f,0x00,0x90,0xbf]
+0x1f 0x00 0x90 0xbf
+
+# GCN: s_sendmsg 111 ; encoding: [0x6f,0x00,0x90,0xbf]
+0x6f 0x00 0x90 0xbf
+
+# GCN: s_sendmsghalt sendmsg(MSG_GS_DONE, GS_OP_NOP) ; encoding: [0x03,0x00,0x91,0xbf]
 0x03 0x00 0x91 0xbf
 
+# GCN: s_sendmsghalt sendmsg(MSG_GS, GS_OP_EMIT, 1) ; encoding: [0x22,0x01,0x91,0xbf]
+0x22 0x01 0x91 0xbf
+
+# GCN: s_sendmsghalt 111 ; encoding: [0x6f,0x00,0x91,0xbf]
+0x6f 0x00 0x91 0xbf
+
 # GCN: s_trap 4 ; encoding: [0x04,0x00,0x92,0xbf]
 0x04 0x00 0x92 0xbf