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-rw-r--r--abs/extra/llvm/AMDGPU-Fix-an-interaction-between-WQM-and-polygon-stippling.patch140
1 files changed, 0 insertions, 140 deletions
diff --git a/abs/extra/llvm/AMDGPU-Fix-an-interaction-between-WQM-and-polygon-stippling.patch b/abs/extra/llvm/AMDGPU-Fix-an-interaction-between-WQM-and-polygon-stippling.patch
deleted file mode 100644
index f23b916..0000000
--- a/abs/extra/llvm/AMDGPU-Fix-an-interaction-between-WQM-and-polygon-stippling.patch
+++ /dev/null
@@ -1,140 +0,0 @@
-From 25e2616626caafb896517e18cd8aa724fba2b200 Mon Sep 17 00:00:00 2001
-From: Tom Stellard <thomas.stellard@amd.com>
-Date: Tue, 29 Nov 2016 03:41:28 +0000
-Subject: [PATCH] Merging r280589:
-
-------------------------------------------------------------------------
-r280589 | nhaehnle | 2016-09-03 05:26:32 -0700 (Sat, 03 Sep 2016) | 19 lines
-
-AMDGPU: Fix an interaction between WQM and polygon stippling
-
-Summary:
-This fixes a rare bug in polygon stippling with non-monolithic pixel shaders.
-
-The underlying problem is as follows: the prolog part contains the polygon
-stippling sequence, i.e. a kill. The main part then enables WQM based on the
-_reduced_ exec mask, effectively undoing most of the polygon stippling.
-
-Since we cannot know whether polygon stippling will be used, the main part
-of a non-monolithic shader must always return to exact mode to fix this
-problem.
-
-Reviewers: arsenm, tstellarAMD, mareko
-
-Subscribers: arsenm, llvm-commits, kzhuravl
-
-Differential Revision: https://reviews.llvm.org/D23131
-
-------------------------------------------------------------------------
-
-git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_39@288105 91177308-0d34-0410-b5e6-96231b3b80d8
----
- lib/Target/AMDGPU/SIInstructions.td | 1 +
- lib/Target/AMDGPU/SIWholeQuadMode.cpp | 7 -----
- test/CodeGen/AMDGPU/wqm.ll | 49 ++++++++++++++++++++++++++++++++---
- 3 files changed, 46 insertions(+), 11 deletions(-)
-
-diff --git a/lib/Target/AMDGPU/SIInstructions.td b/lib/Target/AMDGPU/SIInstructions.td
-index 18b7d5d..dde5f2f 100644
---- a/lib/Target/AMDGPU/SIInstructions.td
-+++ b/lib/Target/AMDGPU/SIInstructions.td
-@@ -2029,6 +2029,7 @@ def SI_RETURN : PseudoInstSI <
- let hasSideEffects = 1;
- let SALU = 1;
- let hasNoSchedulingInfo = 1;
-+ let DisableWQM = 1;
- }
-
- let Uses = [EXEC], Defs = [EXEC, VCC, M0],
-diff --git a/lib/Target/AMDGPU/SIWholeQuadMode.cpp b/lib/Target/AMDGPU/SIWholeQuadMode.cpp
-index b200c15..1534d58 100644
---- a/lib/Target/AMDGPU/SIWholeQuadMode.cpp
-+++ b/lib/Target/AMDGPU/SIWholeQuadMode.cpp
-@@ -219,13 +219,6 @@ char SIWholeQuadMode::scanInstructions(MachineFunction &MF,
- markInstruction(MI, Flags, Worklist);
- GlobalFlags |= Flags;
- }
--
-- if (WQMOutputs && MBB.succ_empty()) {
-- // This is a prolog shader. Make sure we go back to exact mode at the end.
-- Blocks[&MBB].OutNeeds = StateExact;
-- Worklist.push_back(&MBB);
-- GlobalFlags |= StateExact;
-- }
- }
-
- return GlobalFlags;
-diff --git a/test/CodeGen/AMDGPU/wqm.ll b/test/CodeGen/AMDGPU/wqm.ll
-index 809a7ba..41e4264 100644
---- a/test/CodeGen/AMDGPU/wqm.ll
-+++ b/test/CodeGen/AMDGPU/wqm.ll
-@@ -17,17 +17,18 @@ main_body:
- ;CHECK-LABEL: {{^}}test2:
- ;CHECK-NEXT: ; %main_body
- ;CHECK-NEXT: s_wqm_b64 exec, exec
--;CHECK: image_sample
- ;CHECK-NOT: exec
--;CHECK: _load_dword v0,
--define amdgpu_ps float @test2(<8 x i32> inreg %rsrc, <4 x i32> inreg %sampler, float addrspace(1)* inreg %ptr, <4 x i32> %c) {
-+define amdgpu_ps void @test2(<8 x i32> inreg %rsrc, <4 x i32> inreg %sampler, float addrspace(1)* inreg %ptr, <4 x i32> %c) {
- main_body:
- %c.1 = call <4 x float> @llvm.SI.image.sample.v4i32(<4 x i32> %c, <8 x i32> %rsrc, <4 x i32> %sampler, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
- %c.2 = bitcast <4 x float> %c.1 to <4 x i32>
- %c.3 = extractelement <4 x i32> %c.2, i32 0
- %gep = getelementptr float, float addrspace(1)* %ptr, i32 %c.3
- %data = load float, float addrspace(1)* %gep
-- ret float %data
-+
-+ call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %data, float undef, float undef, float undef)
-+
-+ ret void
- }
-
- ; ... but disabled for stores (and, in this simple case, not re-enabled).
-@@ -414,6 +415,46 @@ entry:
- ret void
- }
-
-+; Must return to exact at the end of a non-void returning shader,
-+; otherwise the EXEC mask exported by the epilog will be wrong. This is true
-+; even if the shader has no kills, because a kill could have happened in a
-+; previous shader fragment.
-+;
-+; CHECK-LABEL: {{^}}test_nonvoid_return:
-+; CHECK: s_mov_b64 [[LIVE:s\[[0-9]+:[0-9]+\]]], exec
-+; CHECK: s_wqm_b64 exec, exec
-+;
-+; CHECK: s_and_b64 exec, exec, [[LIVE]]
-+; CHECK-NOT: exec
-+define amdgpu_ps <4 x float> @test_nonvoid_return() nounwind {
-+ %tex = call <4 x float> @llvm.SI.image.sample.v4i32(<4 x i32> undef, <8 x i32> undef, <4 x i32> undef, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
-+ %tex.i = bitcast <4 x float> %tex to <4 x i32>
-+ %dtex = call <4 x float> @llvm.SI.image.sample.v4i32(<4 x i32> %tex.i, <8 x i32> undef, <4 x i32> undef, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
-+ ret <4 x float> %dtex
-+}
-+
-+; CHECK-LABEL: {{^}}test_nonvoid_return_unreachable:
-+; CHECK: s_mov_b64 [[LIVE:s\[[0-9]+:[0-9]+\]]], exec
-+; CHECK: s_wqm_b64 exec, exec
-+;
-+; CHECK: s_and_b64 exec, exec, [[LIVE]]
-+; CHECK-NOT: exec
-+define amdgpu_ps <4 x float> @test_nonvoid_return_unreachable(i32 inreg %c) nounwind {
-+entry:
-+ %tex = call <4 x float> @llvm.SI.image.sample.v4i32(<4 x i32> undef, <8 x i32> undef, <4 x i32> undef, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
-+ %tex.i = bitcast <4 x float> %tex to <4 x i32>
-+ %dtex = call <4 x float> @llvm.SI.image.sample.v4i32(<4 x i32> %tex.i, <8 x i32> undef, <4 x i32> undef, i32 15, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0)
-+
-+ %cc = icmp sgt i32 %c, 0
-+ br i1 %cc, label %if, label %else
-+
-+if:
-+ store volatile <4 x float> %dtex, <4 x float>* undef
-+ unreachable
-+
-+else:
-+ ret <4 x float> %dtex
-+}
-
- declare void @llvm.amdgcn.image.store.v4i32(<4 x float>, <4 x i32>, <8 x i32>, i32, i1, i1, i1, i1) #1
- declare void @llvm.amdgcn.buffer.store.f32(float, <4 x i32>, i32, i32, i1, i1) #1