1# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s 2# This test ensures that the MIR parser parses the 'implicit' and 'implicit-def' 3# register flags correctly. 4 5--- | 6 7 define i32 @foo(i32 %a) { 8 entry: 9 %0 = icmp sle i32 %a, 10 10 br i1 %0, label %less, label %exit 11 12 less: 13 ret i32 0 14 15 exit: 16 ret i32 %a 17 } 18 19 define i1 @implicit_subregister1() { 20 entry: 21 ret i1 false 22 } 23 24 define i16 @implicit_subregister2() { 25 entry: 26 ret i16 0 27 } 28 29... 30--- 31name: foo 32body: | 33 bb.0.entry: 34 successors: %bb.1, %bb.2 35 ; CHECK: CMP32ri8 $edi, 10, implicit-def $eflags 36 ; CHECK-NEXT: JCC_1 %bb.2, 15, implicit $eflags 37 CMP32ri8 $edi, 10, implicit-def $eflags 38 JCC_1 %bb.2, 15, implicit $eflags 39 40 bb.1.less: 41 ; CHECK: $eax = MOV32r0 implicit-def $eflags 42 $eax = MOV32r0 implicit-def $eflags 43 RETQ $eax 44 45 bb.2.exit: 46 $eax = COPY $edi 47 RETQ $eax 48... 49--- 50name: implicit_subregister1 51body: | 52 bb.0.entry: 53 ; Verify that the implicit register verifier won't report an error on implicit 54 ; subregisters. 55 ; CHECK-LABEL: name: implicit_subregister1 56 ; CHECK: dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al 57 dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al 58 RETQ killed $al 59... 60--- 61name: implicit_subregister2 62body: | 63 bb.0.entry: 64 ; CHECK-LABEL: name: implicit_subregister2 65 ; CHECK: dead $r15 = XOR64rr undef $r15, undef $r15, implicit-def dead $eflags, implicit-def $r15w 66 dead $r15 = XOR64rr undef $r15, undef $r15, implicit-def dead $eflags, implicit-def $r15w 67 RETQ killed $r15w 68... 69