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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 3
# RUN: llc -run-pass=stack-coloring %s -o - | FileCheck %s
# We do not expect any stack coloring remappings in this test case.
# And then there should be no reason to drop the tbaa metadata on the
# MOV8rm instruction, so we check that the tbaa info is kept.
--- |
source_filename = "test_case.cc"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%struct.Agg = type { [3 x i8], [3 x i8] }
define i8 @main() {
%padding = alloca %struct.Agg, align 8
%agg = alloca %struct.Agg, align 8
%a2 = getelementptr inbounds %struct.Agg, ptr %agg, i64 0, i32 1
%a22 = getelementptr inbounds [3 x i8], ptr %a2, i64 0, i32 1
%t0 = load i8, ptr %a22, align 1, !tbaa !2
%tobool = icmp slt i8 %t0, 0
%t1 = load ptr, ptr %a2, align 8
%cond = select i1 %tobool, ptr %t1, ptr %a2
%add.ptr.i = getelementptr inbounds i8, ptr %cond, i64 16
%t2 = load i8, ptr %add.ptr.i, align 1, !tbaa !2
ret i8 %t2
}
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 9.0.0"}
!2 = !{!3, !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C++ TBAA"}
...
---
name: main
alignment: 16
tracksRegLiveness: true
stack:
- { id: 0, name: padding, type: default, offset: 0, size: 24, alignment: 16,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: agg, type: default, offset: 0, size: 48, alignment: 16,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
body: |
bb.0:
; CHECK-LABEL: name: main
; CHECK: [[LEA64r:%[0-9]+]]:gr64 = nuw LEA64r %stack.1.agg, 1, $noreg, 24, $noreg
; CHECK-NEXT: CMP8mi %stack.1.agg, 1, $noreg, 47, $noreg, 0, implicit-def $eflags :: (dereferenceable load (s8) from %ir.a22, !tbaa !2)
; CHECK-NEXT: [[CMOV64rm:%[0-9]+]]:gr64 = CMOV64rm [[LEA64r]], %stack.1.agg, 1, $noreg, 24, $noreg, 8, implicit $eflags :: (dereferenceable load (s64) from %ir.a2)
; CHECK-NEXT: [[MOV8rm:%[0-9]+]]:gr8 = MOV8rm killed [[CMOV64rm]], 1, $noreg, 16, $noreg :: (load (s8) from %ir.add.ptr.i, !tbaa !2)
; CHECK-NEXT: $al = COPY [[MOV8rm]]
; CHECK-NEXT: RET 0, $al
LIFETIME_START %stack.0.padding
LIFETIME_START %stack.1.agg
%8:gr64 = nuw LEA64r %stack.1.agg, 1, $noreg, 24, $noreg
CMP8mi %stack.1.agg, 1, $noreg, 47, $noreg, 0, implicit-def $eflags :: (dereferenceable load (s8) from %ir.a22, !tbaa !2)
%13:gr64 = CMOV64rm %8, %stack.1.agg, 1, $noreg, 24, $noreg, 8, implicit $eflags :: (dereferenceable load (s64) from %ir.a2)
%14:gr8 = MOV8rm killed %13, 1, $noreg, 16, $noreg :: (load (s8) from %ir.add.ptr.i, !tbaa !2)
$al = COPY %14
RET 0, $al
...
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