# RUN: llc -march=x86-64 -enable-shrink-wrap=true -start-after shrink-wrap -stop-after shrink-wrap -o /dev/null %s | FileCheck %s # This test ensures that the MIR parser parses the save and restore points in # the machine frame info correctly. --- | define i32 @foo(i32 %a, i32 %b) { entry: %tmp = alloca i32, align 4 %tmp2 = icmp slt i32 %a, %b br i1 %tmp2, label %true, label %false true: store i32 %a, i32* %tmp, align 4 %tmp4 = call i32 @doSomething(i32 0, i32* %tmp) br label %false false: %tmp.0 = phi i32 [ %tmp4, %true ], [ %a, %entry ] ret i32 %tmp.0 } declare i32 @doSomething(i32, i32*) ... --- name: foo tracksRegLiveness: true liveins: - { reg: '%edi' } - { reg: '%esi' } # CHECK: frameInfo: # CHECK: savePoint: '%bb.2.true' # CHECK-NEXT: restorePoint: '%bb.2.true' # CHECK: stack frameInfo: maxAlignment: 4 hasCalls: true savePoint: '%bb.2.true' restorePoint: '%bb.2.true' stack: - { id: 0, name: tmp, offset: 0, size: 4, alignment: 4 } body: | bb.0: successors: %bb.2.true, %bb.1 liveins: %edi, %esi %eax = COPY %edi CMP32rr %eax, killed %esi, implicit-def %eflags JL_1 %bb.2.true, implicit killed %eflags bb.1: successors: %bb.3.false liveins: %eax JMP_1 %bb.3.false bb.2.true: successors: %bb.3.false liveins: %eax MOV32mr %stack.0.tmp, 1, _, 0, _, killed %eax ADJCALLSTACKDOWN64 0, 0, implicit-def %rsp, implicit-def dead %eflags, implicit %rsp %rsi = LEA64r %stack.0.tmp, 1, _, 0, _ %edi = MOV32r0 implicit-def dead %eflags CALL64pcrel32 @doSomething, csr_64, implicit %rsp, implicit %edi, implicit %rsi, implicit-def %rsp, implicit-def %eax ADJCALLSTACKUP64 0, 0, implicit-def %rsp, implicit-def dead %eflags, implicit %rsp bb.3.false: liveins: %eax RETQ %eax ...