3bc125490a
This PR updates the `Verifier` to enforce that `alloca` instructions on AMDGPU must be in AS5. This prevents hitting a misleading backend error like "unable to select FrameIndex," which makes it look like a backend bug when it's actually an IR-level issue.
64 lines
1.8 KiB
LLVM
64 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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; Gracefully handle the alloca that is not in the alloca AS (=5)
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declare void @use(ptr)
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declare void @use2(ptr, ptr)
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define weak amdgpu_kernel void @__omp_offloading_802_ea0109_main_l8(ptr %a) {
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; CHECK-LABEL: @__omp_offloading_802_ea0109_main_l8(
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; CHECK-NEXT: .master:
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; CHECK-NEXT: [[TMP0:%.*]] = alloca [8 x i8], align 1
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; CHECK-NEXT: call void @use2(ptr nonnull [[TMP0]], ptr nonnull [[TMP0]])
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; CHECK-NEXT: ret void
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;
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.master:
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%0 = alloca i8, i64 8, align 1
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store ptr undef, ptr %0, align 8
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call void @use2(ptr %0, ptr %0)
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ret void
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}
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%struct.widget = type { [8 x i8] }
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define void @spam(ptr %arg1) {
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; CHECK-LABEL: @spam(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: [[ALLOCA1:%.*]] = alloca [0 x [30 x %struct.widget]], align 16
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; CHECK-NEXT: call void @zot(ptr nonnull [[ALLOCA1]])
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; CHECK-NEXT: ret void
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;
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bb:
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%alloca = alloca [30 x %struct.widget], i32 0, align 16
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call void @zot(ptr %alloca)
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ret void
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}
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define i1 @alloca_addrspace_0_nonnull() {
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; CHECK-LABEL: @alloca_addrspace_0_nonnull(
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca i8, align 1
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; CHECK-NEXT: call void @use(ptr nonnull [[ALLOCA]])
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; CHECK-NEXT: ret i1 true
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;
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%alloca = alloca i8
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call void @use(ptr %alloca)
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%cmp = icmp ne ptr %alloca, null
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ret i1 %cmp
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}
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define i1 @alloca_addrspace_5_nonnull() {
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; CHECK-LABEL: @alloca_addrspace_5_nonnull(
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca i8, align 1, addrspace(5)
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; CHECK-NEXT: call void @use(ptr addrspace(5) [[ALLOCA]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr addrspace(5) [[ALLOCA]], null
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%alloca = alloca i8, addrspace(5)
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call void @use(ptr addrspace(5) %alloca)
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%cmp = icmp ne ptr addrspace(5) %alloca, null
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ret i1 %cmp
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}
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declare hidden void @zot(ptr)
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