xref: /aosp_15_r20/external/llvm/test/CodeGen/Mips/2013-11-18-fp64-const0.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc -march=mips -mattr=-fp64 < %s | FileCheck -check-prefix=CHECK-FP32 %s
2*9880d681SAndroid Build Coastguard Worker; RUN: llc -march=mips -mcpu=mips32r2 -mattr=+fp64 < %s | FileCheck -check-prefix=CHECK-FP64 %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker; This test case is a simplified version of an llvm-stress generated test with
5*9880d681SAndroid Build Coastguard Worker; seed=3718491962.
6*9880d681SAndroid Build Coastguard Worker; It originally failed on MIPS32 with FP64 with the following error:
7*9880d681SAndroid Build Coastguard Worker;     LLVM ERROR: ran out of registers during register allocation
8*9880d681SAndroid Build Coastguard Worker; This was caused by impossible register class restrictions caused by the use
9*9880d681SAndroid Build Coastguard Worker; of BuildPairF64 instead of BuildPairF64_64.
10*9880d681SAndroid Build Coastguard Worker
11*9880d681SAndroid Build Coastguard Workerdefine void @autogen_SD3718491962() {
12*9880d681SAndroid Build Coastguard WorkerBB:
13*9880d681SAndroid Build Coastguard Worker  ; CHECK-FP32: mtc1 $zero, $f{{[0-3]*[02468]}}
14*9880d681SAndroid Build Coastguard Worker  ; CHECK-FP32: mtc1 $zero, $f{{[0-3]*[13579]}}
15*9880d681SAndroid Build Coastguard Worker
16*9880d681SAndroid Build Coastguard Worker  ; CHECK-FP64: mtc1 $zero, $f{{[0-9]+}}
17*9880d681SAndroid Build Coastguard Worker  ; CHECK-FP64-NOT: mtc1 $zero,
18*9880d681SAndroid Build Coastguard Worker  ; FIXME: A redundant mthc1 is currently emitted. Add a -NOT when it is
19*9880d681SAndroid Build Coastguard Worker  ;        eliminated
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Worker  %Cmp = fcmp ule double 0.000000e+00, undef
22*9880d681SAndroid Build Coastguard Worker  %Cmp11 = fcmp ueq double 0xFDBD965CF1BB7FDA, undef
23*9880d681SAndroid Build Coastguard Worker  br label %CF88
24*9880d681SAndroid Build Coastguard Worker
25*9880d681SAndroid Build Coastguard WorkerCF88:                                             ; preds = %CF86
26*9880d681SAndroid Build Coastguard Worker  %Sl18 = select i1 %Cmp, i1 %Cmp11, i1 %Cmp
27*9880d681SAndroid Build Coastguard Worker  br i1 %Sl18, label %CF88, label %CF85
28*9880d681SAndroid Build Coastguard Worker
29*9880d681SAndroid Build Coastguard WorkerCF85:                                             ; preds = %CF88
30*9880d681SAndroid Build Coastguard Worker  ret void
31*9880d681SAndroid Build Coastguard Worker}
32