[PATCH] D148438: [AMDGPU] Do not crash on unknown register in AMDGPUResourceUsageAnalysis
Pierre van Houtryve via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Apr 18 00:19:41 PDT 2023
Pierre-vh updated this revision to Diff 514537.
Pierre-vh marked 3 inline comments as done.
Pierre-vh added a comment.
Add the assert back in
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D148438/new/
https://reviews.llvm.org/D148438
Files:
llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
llvm/test/CodeGen/AMDGPU/resource-usage-crash-unhandled-reg.mir
Index: llvm/test/CodeGen/AMDGPU/resource-usage-crash-unhandled-reg.mir
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/AMDGPU/resource-usage-crash-unhandled-reg.mir
@@ -0,0 +1,22 @@
+# RUN: llc -march=amdgcn -mcpu=gfx90a -run-pass=amdgpu-resource-usage -verify-machineinstrs %s -o -
+
+# Checks that ResourceUsageAnalysis does not assert if it sees agpr_lo16, agpr_hi16 or TTMP regs.
+---
+
+name: test
+tracksRegLiveness: true
+frameInfo:
+ hasCalls: true
+body: |
+ bb.0:
+ liveins: $sgpr0_sgpr1, $ttmp0, $ttmp0_ttmp1, $ttmp0_ttmp1_ttmp2_ttmp3
+ $vgpr0 = COPY $ttmp0
+ $vgpr1_vgpr2 = COPY $ttmp0_ttmp1
+ $vgpr1_vgpr2_vgpr3_vgpr4 = COPY $ttmp0_ttmp1_ttmp2_ttmp3
+ $vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8 = COPY $ttmp0_ttmp1_ttmp2_ttmp3_ttmp4_ttmp5_ttmp6_ttmp7
+ $vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16 = COPY $ttmp0_ttmp1_ttmp2_ttmp3_ttmp4_ttmp5_ttmp6_ttmp7_ttmp8_ttmp9_ttmp10_ttmp11_ttmp12_ttmp13_ttmp14_ttmp15
+ $agpr1_lo16 = IMPLICIT_DEF
+ $agpr1_hi16 = IMPLICIT_DEF
+ $sgpr2_sgpr3 = SI_CALL undef $sgpr0_sgpr1, 0, CustomRegMask()
+ S_ENDPGM 0
+...
Index: llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
===================================================================
--- llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
+++ llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
@@ -484,11 +484,14 @@
IsAGPR = true;
Width = 32;
} else {
+ // We only expect TTMP registers or registers that do not belong to
+ // any RC.
assert((AMDGPU::TTMP_32RegClass.contains(Reg) ||
AMDGPU::TTMP_64RegClass.contains(Reg) ||
AMDGPU::TTMP_128RegClass.contains(Reg) ||
AMDGPU::TTMP_256RegClass.contains(Reg) ||
- AMDGPU::TTMP_512RegClass.contains(Reg)) &&
+ AMDGPU::TTMP_512RegClass.contains(Reg) ||
+ !TRI.getPhysRegBaseClass(Reg)) &&
"Unknown register class");
}
unsigned HWReg = TRI.getHWRegIndex(Reg);
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