1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 # RUN: llc -mtriple armv7-gnueabihf -run-pass instruction-select \
3 # RUN: -verify-machineinstrs -o - %s | FileCheck %s
5 # Test that we constrain register classes of temporary virtual registers
6 # defined by nested instructions built from a Dst Pattern
8 # G_FPTOSI selects to a (COPY_TO_REGCLASS (VTOSIZS SPR:$a), GPR), where
9 # COPY_TO_REGCLASS doesn't constrain its source register class. It exposes the
10 # bug as we create a tmp reg for VTOSIZS' result and don't constrain its
11 # register class as COPY_TO_REGCLASS' source (which is fine) nor as VTOSIZS'
12 # destination (which is not).
14 # https://bugs.llvm.org/show_bug.cgi?id=35965
20 ; CHECK-LABEL: name: test_fptosi
21 ; CHECK: [[COPY:%[0-9]+]]:spr = COPY $s0
22 ; CHECK: [[VTOSIZS:%[0-9]+]]:spr = VTOSIZS [[COPY]], 14 /* CC::al */, $noreg
23 ; CHECK: [[COPY1:%[0-9]+]]:gpr = COPY [[VTOSIZS]]
24 ; CHECK: $r0 = COPY [[COPY1]]
25 ; CHECK: MOVPCLR 14 /* CC::al */, $noreg, implicit $r0
26 %0:fprb(s32) = COPY $s0
27 %1:gprb(s32) = G_FPTOSI %0(s32)
29 MOVPCLR 14, $noreg, implicit $r0