61f99a1c75
Try to use DiagnosticInfo if every register in the class is reserved by forcing assignment to a reserved register. Also reduces the number of redundant errors emitted, particularly with fast. This is still broken in the case of undef uses. There are additional complications in greedy and fast, so leave it for a separate fix.
29 lines
1.3 KiB
LLVM
29 lines
1.3 KiB
LLVM
; RUN: not llc -mtriple=amdgcn -mcpu=gfx908 -verify-machineinstrs -o - %s 2>%t.err | FileCheck -implicit-check-not=error %s
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; RUN: FileCheck -check-prefix=ERR %s < %t.err
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; This testcase would fail on an "illegal eviction". If the assert was
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; relaxed to allow equivalent cascade numbers, it would infinite loop.
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; ERR: error: inline assembly requires more registers than available
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%asm.output = type { <16 x i32>, <8 x i32>, <5 x i32>, <4 x i32>, <16 x i32> }
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; CHECK-LABEL: {{^}}illegal_eviction_assert:
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; CHECK: ; def v[4:19] v[20:27] v[0:4] v[0:3] a[0:15]
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; CHECK: ; clobber
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; CHECK: ; use v[4:19] v[20:27] v[0:4] v[0:3] a[1:16]
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define void @illegal_eviction_assert(ptr addrspace(1) %arg) #0 {
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;%agpr0 = call i32 asm sideeffect "; def $0","=${a0}"()
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%asm = call %asm.output asm sideeffect "; def $0 $1 $2 $3 $4","=v,=v,=v,=v,={a[0:15]}"()
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%vgpr0 = extractvalue %asm.output %asm, 0
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%vgpr1 = extractvalue %asm.output %asm, 1
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%vgpr2 = extractvalue %asm.output %asm, 2
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%vgpr3 = extractvalue %asm.output %asm, 3
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%agpr0 = extractvalue %asm.output %asm, 4
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call void asm sideeffect "; clobber", "~{v[0:31]}"()
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call void asm sideeffect "; use $0 $1 $2 $3 $4","v,v,v,v,{a[1:16]}"(<16 x i32> %vgpr0, <8 x i32> %vgpr1, <5 x i32> %vgpr2, <4 x i32> %vgpr3, <16 x i32> %agpr0)
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ret void
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}
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attributes #0 = { "amdgpu-waves-per-eu"="8,8" }
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