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AMDGPU: Fix crash on illegal type for inlineasm

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There are still crashes on non-MVT types in other
places.

llvm-svn: 287310
This commit is contained in:
Matt Arsenault 2016-11-18 04:42:57 +00:00
parent 70d45be813
commit 0fe623be4f
2 changed files with 85 additions and 0 deletions
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2
lib/Target/AMDGPU/SIISelLowering.cpp
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@ -4172,6 +4172,8 @@ std::pair<unsigned, const TargetRegisterClass *>
SITargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
StringRef Constraint,
MVT VT) const {
if (!isTypeLegal(VT))
return TargetLowering::getRegForInlineAsmConstraint(TRI, Constraint, VT);
if (Constraint.size() == 1) {
switch (Constraint[0]) {

83
test/CodeGen/AMDGPU/inlineasm-illegal-type.ll Normal file
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@ -0,0 +1,83 @@
; RUN: not llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s 2>&1 | FileCheck -check-prefix=GCN -check-prefix=CI %s
; RUN: not llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s 2>&1 | FileCheck -check-prefix=GCN -check-prefix=VI %s
; GCN: error: couldn't allocate output register for constraint 's'
; GCN: error: couldn't allocate input reg for constraint 's'
define void @s_input_output_i8() {
%v = tail call i8 asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(i8 %v)
ret void
}
; GCN: error: couldn't allocate output register for constraint 'v'
; GCN: error: couldn't allocate input reg for constraint 'v'
define void @v_input_output_i8() {
%v = tail call i8 asm sideeffect "v_mov_b32 $0, -1", "=v"()
tail call void asm sideeffect "; use $0", "v"(i8 %v)
ret void
}
; GCN: error: couldn't allocate output register for constraint 's'
; GCN: error: couldn't allocate input reg for constraint 's'
define void @s_input_output_i128() {
%v = tail call i128 asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(i128 %v)
ret void
}
; GCN: error: couldn't allocate output register for constraint 's'
; GCN: error: couldn't allocate input reg for constraint 's'
define void @s_input_output_v8f16() {
%v = tail call <8 x half> asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(<8 x half> %v)
ret void
}
; CI: error: couldn't allocate output register for constraint 's'
; CI: error: couldn't allocate input reg for constraint 's'
; VI-NOT: error
define void @s_input_output_f16() {
%v = tail call half asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(half %v)
ret void
}
; GCN: error: couldn't allocate output register for constraint 's'
; GCN: error: couldn't allocate input reg for constraint 's'
define void @s_input_output_v2f16() {
%v = tail call <2 x half> asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(<2 x half> %v)
ret void
}
; GCN: error: couldn't allocate output register for constraint 'v'
; GCN: error: couldn't allocate input reg for constraint 'v'
define void @v_input_output_v2f16() {
%v = tail call <2 x half> asm sideeffect "v_mov_b32 $0, -1", "=v"()
tail call void asm sideeffect "; use $0", "v"(<2 x half> %v)
ret void
}
; CI: error: couldn't allocate output register for constraint 's'
; CI: error: couldn't allocate input reg for constraint 's'
; VI-NOT: error
define void @s_input_output_i16() {
%v = tail call i16 asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(i16 %v)
ret void
}
; GCN: error: couldn't allocate output register for constraint 's'
; GCN: error: couldn't allocate input reg for constraint 's'
define void @s_input_output_v2i16() {
%v = tail call <2 x i16> asm sideeffect "s_mov_b32 $0, -1", "=s"()
tail call void asm sideeffect "; use $0", "s"(<2 x i16> %v)
ret void
}
; FIXME: Crash in codegen prepare
; define void @s_input_output_i3() {
; %v = tail call i3 asm sideeffect "s_mov_b32 $0, -1", "=s"()
; tail call void asm sideeffect "; use $0", "s"(i3 %v)
; ret void
; }