# RUN: llc -mtriple arm-- -global-isel -run-pass=regbankselect %s -o - | FileCheck %s --- | define void @test_add_s32() { ret void } define void @test_add_s16() { ret void } define void @test_add_s8() { ret void } define void @test_add_s1() { ret void } define void @test_sub_s32() { ret void } define void @test_sub_s16() { ret void } define void @test_sub_s8() { ret void } define void @test_mul_s32() { ret void } define void @test_mul_s16() { ret void } define void @test_mul_s8() { ret void } define void @test_sdiv_s32() #1 { ret void } define void @test_udiv_s32() #1 { ret void } define void @test_and_s32() { ret void} define void @test_or_s32() { ret void} define void @test_xor_s32() { ret void} define void @test_loads() #0 { ret void } define void @test_stores() #0 { ret void } define void @test_stack() { ret void } define void @test_gep() { ret void } define void @test_constants() { ret void } define void @test_anyext_s8_32() { ret void } define void @test_anyext_s16_32() { ret void } define void @test_trunc_s32_16() { ret void } define void @test_icmp_eq_s32() { ret void } define void @test_select_s32() { ret void } define void @test_fadd_s32() #0 { ret void } define void @test_fadd_s64() #0 { ret void } define void @test_soft_fp_s64() #0 { ret void } attributes #0 = { "target-features"="+vfp2"} attributes #1 = { "target-features"="+hwdiv-arm" } ... --- name: test_add_s32 # CHECK-LABEL: name: test_add_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_ADD %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_add_s16 # CHECK-LABEL: name: test_add_s16 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s16) = COPY %r0 %1(s16) = COPY %r1 %2(s32) = G_ANYEXT %0(s16) %3(s32) = G_ANYEXT %1(s16) %4(s32) = G_ADD %2, %3 %5(s16) = G_TRUNC %4(s32) %r0 = COPY %5(s16) BX_RET 14, _, implicit %r0 ... --- name: test_add_s8 # CHECK-LABEL: name: test_add_s8 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s8) = COPY %r0 %1(s8) = COPY %r1 %2(s32) = G_ANYEXT %0(s8) %3(s32) = G_ANYEXT %1(s8) %4(s32) = G_ADD %2, %3 %5(s8) = G_TRUNC %4(s32) %r0 = COPY %5(s8) BX_RET 14, _, implicit %r0 ... --- name: test_add_s1 # CHECK-LABEL: name: test_add_s1 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s1) = COPY %r0 %1(s1) = COPY %r1 %2(s32) = G_ANYEXT %0(s1) %3(s32) = G_ANYEXT %1(s1) %4(s32) = G_ADD %2, %3 %5(s1) = G_TRUNC %4(s32) %r0 = COPY %5(s1) BX_RET 14, _, implicit %r0 ... --- name: test_sub_s32 # CHECK-LABEL: name: test_sub_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_SUB %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_sub_s16 # CHECK-LABEL: name: test_sub_s16 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s16) = COPY %r0 %1(s16) = COPY %r1 %2(s32) = G_ANYEXT %0(s16) %3(s32) = G_ANYEXT %1(s16) %4(s32) = G_SUB %2, %3 %5(s16) = G_TRUNC %4(s32) %r0 = COPY %5(s16) BX_RET 14, _, implicit %r0 ... --- name: test_sub_s8 # CHECK-LABEL: name: test_sub_s8 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s8) = COPY %r0 %1(s8) = COPY %r1 %2(s32) = G_ANYEXT %0(s8) %3(s32) = G_ANYEXT %1(s8) %4(s32) = G_SUB %2, %3 %5(s8) = G_TRUNC %4(s32) %r0 = COPY %5(s8) BX_RET 14, _, implicit %r0 ... --- name: test_mul_s32 # CHECK-LABEL: name: test_mul_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_MUL %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_mul_s16 # CHECK-LABEL: name: test_mul_s16 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s16) = COPY %r0 %1(s16) = COPY %r1 %2(s32) = G_ANYEXT %0(s16) %3(s32) = G_ANYEXT %1(s16) %4(s32) = G_MUL %2, %3 %5(s16) = G_TRUNC %4(s32) %r0 = COPY %5(s16) BX_RET 14, _, implicit %r0 ... --- name: test_mul_s8 # CHECK-LABEL: name: test_mul_s8 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s8) = COPY %r0 %1(s8) = COPY %r1 %2(s32) = G_ANYEXT %0(s8) %3(s32) = G_ANYEXT %1(s8) %4(s32) = G_MUL %2, %3 %5(s8) = G_TRUNC %4(s32) %r0 = COPY %5(s8) BX_RET 14, _, implicit %r0 ... --- name: test_sdiv_s32 # CHECK-LABEL: name: test_sdiv_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_SDIV %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_udiv_s32 # CHECK-LABEL: name: test_udiv_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_UDIV %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_and_s32 # CHECK-LABEL: name: test_and_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_AND %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_or_s32 # CHECK-LABEL: name: test_or_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_OR %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_xor_s32 # CHECK-LABEL: name: test_xor_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s32) = G_XOR %0, %1 %r0 = COPY %2(s32) BX_RET 14, _, implicit %r0 ... --- name: test_loads # CHECK-LABEL: name: test_loads legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } # CHECK: - { id: 6, class: fprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } - { id: 6, class: _ } body: | bb.0: liveins: %r0 %0(p0) = COPY %r0 %6(s64) = G_LOAD %0 :: (load 8) %1(s32) = G_LOAD %0 :: (load 4) %2(s16) = G_LOAD %0 :: (load 2) %3(s8) = G_LOAD %0 :: (load 1) %4(s1) = G_LOAD %0 :: (load 1) %5(p0) = G_LOAD %0 :: (load 4) BX_RET 14, _, implicit %r0 ... --- name: test_stores # CHECK-LABEL: name: test_stores legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } # CHECK: - { id: 5, class: gprb, preferred-register: '' } # CHECK: - { id: 6, class: fprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } - { id: 5, class: _ } - { id: 6, class: _ } body: | bb.0: liveins: %r0, %r1, %r2, %r3, %r4, %r5, %d6 %0(p0) = COPY %r0 %1(s32) = COPY %r1 G_STORE %1(s32), %0 :: (store 4) %2(s16) = COPY %r2 G_STORE %2(s16), %0 :: (store 2) %3(s8) = COPY %r3 G_STORE %3(s8), %0 :: (store 1) %4(s1) = COPY %r4 G_STORE %4(s1), %0 :: (store 1) %5(p0) = COPY %r5 G_STORE %5(p0), %0 :: (store 4) %6(s64) = COPY %d6 G_STORE %6(s64), %0 :: (store 8) BX_RET 14, _, implicit %r0 ... --- name: test_stack # CHECK-LABEL: name: test_stack legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } fixedStack: - { id: 0, offset: 0, size: 4, alignment: 4, isImmutable: true, isAliased: false } body: | bb.0: %0(p0) = G_FRAME_INDEX %fixed-stack.0 %1(s32) = G_LOAD %0(p0) :: (load 4 from %fixed-stack.0, align 0) %2(p0) = COPY %sp %3(s32) = G_CONSTANT i32 8 %4(p0) = G_GEP %2, %3(s32) G_STORE %1(s32), %4(p0) :: (store 4) BX_RET 14, _ ... --- name: test_gep # CHECK-LABEL: name: test_gep legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %r0, %r1 %0(p0) = COPY %r0 %1(s32) = COPY %r1 %2(p0) = G_GEP %0, %1(s32) %r0 = COPY %2(p0) BX_RET 14, _, implicit %r0 ... --- name: test_constants # CHECK-LABEL: name: test_constants legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } body: | bb.0: %0(s32) = G_CONSTANT 42 %r0 = COPY %0(s32) BX_RET 14, _, implicit %r0 ... --- name: test_anyext_s8_32 # CHECK-LABEL: name: test_anyext_s8_32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } body: | bb.0: liveins: %r0 %0(s8) = COPY %r0 %1(s32) = G_ANYEXT %0(s8) %r0 = COPY %1(s32) BX_RET 14, _, implicit %r0 ... --- name: test_anyext_s16_32 # CHECK-LABEL: name: test_anyext_s16_32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } body: | bb.0: liveins: %r0 %0(s16) = COPY %r0 %1(s32) = G_ANYEXT %0(s16) %r0 = COPY %1(s32) BX_RET 14, _, implicit %r0 ... --- name: test_trunc_s32_16 # CHECK-LABEL: name: test_trunc_s32_16 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } body: | bb.0: liveins: %r0 %0(s32) = COPY %r0 %1(s16) = G_TRUNC %0(s32) %r0 = COPY %1(s16) BX_RET 14, _, implicit %r0 ... --- name: test_icmp_eq_s32 # CHECK-LABEL: name: test_icmp_eq_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s1) = G_ICMP intpred(eq), %0(s32), %1 %3(s32) = G_ZEXT %2(s1) %r0 = COPY %3(s32) BX_RET 14, _, implicit %r0 ... --- name: test_select_s32 # CHECK-LABEL: name: test_select_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: gprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } body: | bb.0: liveins: %r0, %r1, %r2 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s1) = COPY %r2 %3(s32) = G_SELECT %2(s1), %0, %1 %r0 = COPY %3(s32) BX_RET 14, _, implicit %r0 ... --- name: test_fadd_s32 # CHECK-LABEL: name: test_fadd_s32 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: fprb, preferred-register: '' } # CHECK: - { id: 1, class: fprb, preferred-register: '' } # CHECK: - { id: 2, class: fprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %s0, %s1 %0(s32) = COPY %s0 %1(s32) = COPY %s1 %2(s32) = G_FADD %0, %1 %s0 = COPY %2(s32) BX_RET 14, _, implicit %s0 ... --- name: test_fadd_s64 # CHECK-LABEL: name: test_fadd_s64 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: fprb, preferred-register: '' } # CHECK: - { id: 1, class: fprb, preferred-register: '' } # CHECK: - { id: 2, class: fprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } body: | bb.0: liveins: %d0, %d1 %0(s64) = COPY %d0 %1(s64) = COPY %d1 %2(s64) = G_FADD %0, %1 %d0 = COPY %2(s64) BX_RET 14, _, implicit %d0 ... --- name: test_soft_fp_s64 # CHECK-LABEL: name: test_soft_fp_s64 legalized: true regBankSelected: false selected: false # CHECK: registers: # CHECK: - { id: 0, class: gprb, preferred-register: '' } # CHECK: - { id: 1, class: gprb, preferred-register: '' } # CHECK: - { id: 2, class: fprb, preferred-register: '' } # CHECK: - { id: 3, class: gprb, preferred-register: '' } # CHECK: - { id: 4, class: gprb, preferred-register: '' } registers: - { id: 0, class: _ } - { id: 1, class: _ } - { id: 2, class: _ } - { id: 3, class: _ } - { id: 4, class: _ } body: | bb.0: liveins: %r0, %r1 %0(s32) = COPY %r0 %1(s32) = COPY %r1 %2(s64) = G_MERGE_VALUES %0(s32), %1(s32) %3(s32), %4(s32) = G_UNMERGE_VALUES %2(s64) %r0 = COPY %3(s32) %r1 = COPY %4(s32) BX_RET 14, _, implicit %r0, implicit %r1 ...