SpirvShaderDebugger: Add flag for printing opcodes

The `PRINT_EACH_PROCESSED_INSTRUCTION` preprocessor flag can control printing of each instruction before they are processed. This is exceptionally helpful when debugging the debugger (or anything else to do with SpirvShader). Bug: b/145351270 Change-Id: Iddfbedbfc86487d71f6980b2f3fb74f7f13e972f Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/40093Reviewed-by: Nicolas Capens <nicolascapens@google.com> Tested-by: Ben Clayton <bclayton@google.com> Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>

SpirvShaderDebugger: Add flag for printing opcodes
b3805904 · Ben Clayton · 8842c8f4 · b3805904
Commit b3805904 authored Jan 13, 2020 by Ben Clayton
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SpirvShaderDebugger.cpp src/Pipeline/SpirvShaderDebugger.cpp +14 -0

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--- a/src/Pipeline/SpirvShaderDebugger.cpp
+++ b/src/Pipeline/SpirvShaderDebugger.cpp
@@ -14,6 +14,9 @@

 #include "SpirvShader.hpp"

+// If enabled, each instruction will be printed before processing.
+#define PRINT_EACH_PROCESSED_INSTRUCTION 0
+
 #ifdef ENABLE_VK_DEBUGGER

 #	include "Vulkan/Debug/Context.hpp"
@@ -598,6 +601,17 @@ void SpirvShader::dbgEndEmit(EmitState *state) const

 void SpirvShader::dbgBeginEmitInstruction(InsnIterator insn, EmitState *state) const
 {
+#	if PRINT_EACH_PROCESSED_INSTRUCTION
+	auto instruction = spvtools::spvInstructionBinaryToText(
+	    SPV_ENV_VULKAN_1_1,
+	    insn.wordPointer(0),
+	    insn.wordCount(),
+	    insns.data(),
+	    insns.size(),
+	    SPV_BINARY_TO_TEXT_OPTION_NO_HEADER);
+	printf("%s\n", instruction.c_str());
+#	endif  // PRINT_EACH_PROCESSED_INSTRUCTION
+
 	auto dbg = impl.debugger;
 	if(!dbg) { return; }