Eli Friedman 4f04db4b54 AllocaInst should store Align instead of MaybeAlign.
Along the lines of D77454 and D79968.  Unlike loads and stores, the
default alignment is getPrefTypeAlign, to match the existing handling in
various places, including SelectionDAG and InstCombine.

Differential Revision: https://reviews.llvm.org/D80044
2020-05-16 14:53:16 -07:00

63 lines
2.6 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt < %s -argpromotion -S | FileCheck %s
; RUN: opt < %s -passes=argpromotion -S | FileCheck %s
declare void @sink(i32)
define internal void @test(i32** %X) !dbg !2 {
; CHECK-LABEL: define {{[^@]+}}@test
; CHECK-SAME: (i32 [[X_VAL_VAL:%.*]]) !dbg !3
; CHECK-NEXT: call void @sink(i32 [[X_VAL_VAL]])
; CHECK-NEXT: ret void
;
%1 = load i32*, i32** %X, align 8
%2 = load i32, i32* %1, align 8
call void @sink(i32 %2)
ret void
}
%struct.pair = type { i32, i32 }
define internal void @test_byval(%struct.pair* byval %P) {
; CHECK-LABEL: define {{[^@]+}}@test_byval
; CHECK-SAME: (i32 [[P_0:%.*]], i32 [[P_1:%.*]])
; CHECK-NEXT: [[P:%.*]] = alloca [[STRUCT_PAIR:%.*]], align 8
; CHECK-NEXT: [[DOT0:%.*]] = getelementptr [[STRUCT_PAIR]], %struct.pair* [[P]], i32 0, i32 0
; CHECK-NEXT: store i32 [[P_0]], i32* [[DOT0]], align 4
; CHECK-NEXT: [[DOT1:%.*]] = getelementptr [[STRUCT_PAIR]], %struct.pair* [[P]], i32 0, i32 1
; CHECK-NEXT: store i32 [[P_1]], i32* [[DOT1]], align 4
; CHECK-NEXT: ret void
;
ret void
}
define void @caller(i32** %Y, %struct.pair* %P) {
; CHECK-LABEL: define {{[^@]+}}@caller
; CHECK-SAME: (i32** [[Y:%.*]], %struct.pair* [[P:%.*]])
; CHECK-NEXT: [[Y_VAL:%.*]] = load i32*, i32** [[Y]], align 8, !dbg !4
; CHECK-NEXT: [[Y_VAL_VAL:%.*]] = load i32, i32* [[Y_VAL]], align 8, !dbg !4
; CHECK-NEXT: call void @test(i32 [[Y_VAL_VAL]]), !dbg !4
; CHECK-NEXT: [[P_0:%.*]] = getelementptr [[STRUCT_PAIR:%.*]], %struct.pair* [[P]], i32 0, i32 0, !dbg !5
; CHECK-NEXT: [[P_0_VAL:%.*]] = load i32, i32* [[P_0]], align 4, !dbg !5
; CHECK-NEXT: [[P_1:%.*]] = getelementptr [[STRUCT_PAIR]], %struct.pair* [[P]], i32 0, i32 1, !dbg !5
; CHECK-NEXT: [[P_1_VAL:%.*]] = load i32, i32* [[P_1]], align 4, !dbg !5
; CHECK-NEXT: call void @test_byval(i32 [[P_0_VAL]], i32 [[P_1_VAL]]), !dbg !5
; CHECK-NEXT: ret void
;
call void @test(i32** %Y), !dbg !1
call void @test_byval(%struct.pair* %P), !dbg !6
ret void
}
!llvm.module.flags = !{!0}
!llvm.dbg.cu = !{!3}
!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !DILocation(line: 8, scope: !2)
!2 = distinct !DISubprogram(name: "test", file: !5, line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !3, scopeLine: 3, scope: null)
!3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: LineTablesOnly, file: !5)
!5 = !DIFile(filename: "test.c", directory: "")
!6 = !DILocation(line: 9, scope: !2)