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>
21 lines
868 B
LLVM
21 lines
868 B
LLVM
; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
|
|
; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
|
|
|
|
; CHECK: %[[#INT8:]] = OpTypeInt 8 0
|
|
; CHECK: %[[#PTR1:]] = OpTypePointer CrossWorkgroup %[[#INT8]]
|
|
; CHECK: %[[#PTR2:]] = OpTypePointer UniformConstant %[[#INT8]]
|
|
; CHECK: %[[#]] = OpInBoundsPtrAccessChain %[[#PTR1]] %[[#]] %[[#]]
|
|
; CHECK: %[[#]] = OpInBoundsPtrAccessChain %[[#PTR2]] %[[#]] %[[#]]
|
|
|
|
@G_c = global ptr addrspace(1) null
|
|
@G_d = global ptr addrspace(2) null
|
|
|
|
define spir_kernel void @foo(ptr addrspace(1) %a, ptr addrspace(2) %b) {
|
|
entry:
|
|
%c = getelementptr inbounds i8, ptr addrspace(1) %a, i32 1
|
|
store ptr addrspace(1) %c, ptr @G_c
|
|
%d = getelementptr inbounds i8, ptr addrspace(2) %b, i32 2
|
|
store ptr addrspace(2) %d, ptr @G_d
|
|
ret void
|
|
}
|