35dfeb7b4d
The instruction selection pass for SPIR-V now performs dead code elimination (DCE). This change removes unused instructions, leading to more optimized SPIR-V output. As a consequence of this, several tests were updated to ensure their continued correctness and to prevent previously tested code from being optimized away. Specifically: - Many tests now store computed values into global variables to ensure they are not eliminated by DCE, allowing their code generation to be verified. - The test `keep-tracked-const.ll` was removed because it no longer tested its original intent. The check statements in this test were for constants generated when expanding a G_TRUNC instruction, which is now removed by DCE instead of being expanded. - A new test, `remove-dead-type-intrinsics.ll`, was added to confirm that dead struct types are correctly removed by the compiler. These updates improve the SPIR-V backends optimization capabilities and maintain the robustness of the test suite. --------- Co-authored-by: Nathan Gauër <github@keenuts.net>
27 lines
907 B
LLVM
27 lines
907 B
LLVM
; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - | FileCheck %s
|
|
; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-vulkan-compute %s -o - -filetype=obj | spirv-val --target-env vulkan1.3 %}
|
|
|
|
@PrivInternal = internal addrspace(10) global i32 456
|
|
; CHECK-DAG: %[[#type:]] = OpTypeInt 32 0
|
|
; CHECK-DAG: %[[#ptrty:]] = OpTypePointer Private %[[#type]]
|
|
; CHECK-DAG: %[[#value:]] = OpConstant %[[#type]] 456
|
|
; CHECK-DAG: %[[#var:]] = OpVariable %[[#ptrty]] Private %[[#value]]
|
|
|
|
@G = internal global i32 0
|
|
|
|
define hidden spir_func void @Foo() {
|
|
%p = addrspacecast ptr addrspace(10) @PrivInternal to ptr
|
|
%v = load i32, ptr %p, align 4
|
|
store i32 %v, ptr @G
|
|
ret void
|
|
; CHECK: OpLabel
|
|
; CHECK: OpLoad %[[#type]] %[[#var]] Aligned 4
|
|
; CHECK: OpReturn
|
|
}
|
|
|
|
define void @main() #1 {
|
|
ret void
|
|
}
|
|
|
|
attributes #1 = { "hlsl.numthreads"="8,1,1" "hlsl.shader"="compute" }
|