-; RUN: llc < %s -mtriple=armv7-apple-ios -o - | FileCheck %s
-; RUN: llc < %s -mtriple=arm-none-eabi -o - | FileCheck --check-prefix=EABI %s
+; RUN: llc < %s -mtriple=armv7-apple-ios -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-IOS --check-prefix=CHECK
+; RUN: llc < %s -mtriple=thumbv7m-none-macho -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-DARWIN --check-prefix=CHECK
+; RUN: llc < %s -mtriple=arm-none-eabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI --check-prefix=CHECK
+; RUN: llc < %s -mtriple=arm-none-eabihf -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI --check-prefix=CHECK
-@from = common global [500 x i32] zeroinitializer, align 4
-@to = common global [500 x i32] zeroinitializer, align 4
+define void @f1(i8* %dest, i8* %src) {
+entry:
+ ; CHECK-LABEL: f1
+
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 500, i32 0, i1 false)
+
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 500, i32 0, i1 false)
+
+ ; EABI memset swaps arguments
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 1, i32 500, i32 0, i1 false)
+
+ ; EABI uses memclr if value set to 0
+ ; CHECK-IOS: mov r1, #0
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #0
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: __aeabi_memclr
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 0, i32 500, i32 0, i1 false)
+
+ ; EABI uses aligned function variants if possible
+
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove4
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 500, i32 4, i1 false)
+
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy4
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 500, i32 4, i1 false)
+
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: __aeabi_memset4
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 1, i32 500, i32 4, i1 false)
+
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: __aeabi_memclr4
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 0, i32 500, i32 4, i1 false)
+
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove8
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 500, i32 8, i1 false)
+
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy8
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 500, i32 8, i1 false)
+
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: __aeabi_memset8
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 1, i32 500, i32 8, i1 false)
+
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: __aeabi_memclr8
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 0, i32 500, i32 8, i1 false)
+
+ unreachable
+}
+
+; Check that alloca arguments to memory intrinsics are automatically aligned if at least 8 bytes in size
+define void @f2(i8* %dest, i32 %n) {
+entry:
+ ; CHECK-LABEL: f2
+
+ ; IOS (ARMv7) should 8-byte align, others should 4-byte align
+ ; CHECK-IOS: add r1, sp, #32
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: add r1, sp, #28
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: add r1, sp, #28
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [9 x i8], align 1
+ %0 = bitcast [9 x i8]* %arr0 to i8*
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
+
+ ; CHECK: add r1, sp, #16
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [9 x i8], align 1
+ %1 = bitcast [9 x i8]* %arr1 to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
+
+ ; CHECK-IOS: mov r0, sp
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: add r0, sp, #4
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: add r0, sp, #4
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [9 x i8], align 1
+ %2 = bitcast [9 x i8]* %arr2 to i8*
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
+
+ unreachable
+}
+
+; Check that alloca arguments are not aligned if less than 8 bytes in size
+define void @f3(i8* %dest, i32 %n) {
+entry:
+ ; CHECK-LABEL: f3
-define void @f() {
+ ; CHECK: {{add(.w)? r1, sp, #17|sub(.w)? r1, r7, #15}}
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [7 x i8], align 1
+ %0 = bitcast [7 x i8]* %arr0 to i8*
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r1, sp, #10}}
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [7 x i8], align 1
+ %1 = bitcast [7 x i8]* %arr1 to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r0, sp, #3}}
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [7 x i8], align 1
+ %2 = bitcast [7 x i8]* %arr2 to i8*
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
+
+ unreachable
+}
+
+; Check that alloca arguments are not aligned if size+offset is less than 8 bytes
+define void @f4(i8* %dest, i32 %n) {
entry:
+ ; CHECK-LABEL: f4
+
+ ; CHECK: {{add(.w)? r., sp, #23|sub(.w)? r., r7, #17}}
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [9 x i8], align 1
+ %0 = getelementptr inbounds [9 x i8], [9 x i8]* %arr0, i32 0, i32 4
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
- ; CHECK: memmove
- ; EABI: __aeabi_memmove
- call void @llvm.memmove.p0i8.p0i8.i32(i8* bitcast ([500 x i32]* @from to i8*), i8* bitcast ([500 x i32]* @to to i8*), i32 500, i32 0, i1 false)
+ ; CHECK: {{add(.w)? r., sp, #(10|14)}}
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [9 x i8], align 1
+ %1 = getelementptr inbounds [9 x i8], [9 x i8]* %arr1, i32 0, i32 4
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
- ; CHECK: memcpy
- ; EABI: __aeabi_memcpy
- call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast ([500 x i32]* @from to i8*), i8* bitcast ([500 x i32]* @to to i8*), i32 500, i32 0, i1 false)
+ ; CHECK: {{add(.w)? r., sp, #(1|5)}}
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [9 x i8], align 1
+ %2 = getelementptr inbounds [9 x i8], [9 x i8]* %arr2, i32 0, i32 4
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
- ; EABI memset swaps arguments
- ; CHECK: mov r1, #0
- ; CHECK: memset
- ; EABI: mov r2, #0
- ; EABI: __aeabi_memset
- call void @llvm.memset.p0i8.i32(i8* bitcast ([500 x i32]* @from to i8*), i8 0, i32 500, i32 0, i1 false)
- unreachable
+ unreachable
}
+; Check that alloca arguments are not aligned if the offset is not a multiple of 4
+define void @f5(i8* %dest, i32 %n) {
+entry:
+ ; CHECK-LABEL: f5
+
+ ; CHECK: {{add(.w)? r., sp, #27|sub(.w)? r., r7, #21}}
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [13 x i8], align 1
+ %0 = getelementptr inbounds [13 x i8], [13 x i8]* %arr0, i32 0, i32 1
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(10|14)}}
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [13 x i8], align 1
+ %1 = getelementptr inbounds [13 x i8], [13 x i8]* %arr1, i32 0, i32 1
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(1|5)}}
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [13 x i8], align 1
+ %2 = getelementptr inbounds [13 x i8], [13 x i8]* %arr2, i32 0, i32 1
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
+
+ unreachable
+}
+
+; Check that alloca arguments are not aligned if the offset is unknown
+define void @f6(i8* %dest, i32 %n, i32 %i) {
+entry:
+ ; CHECK-LABEL: f6
+
+ ; CHECK: {{add(.w)? r., sp, #27|sub(.w)? r., r7, #25}}
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [13 x i8], align 1
+ %0 = getelementptr inbounds [13 x i8], [13 x i8]* %arr0, i32 0, i32 %i
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(10|14)}}
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [13 x i8], align 1
+ %1 = getelementptr inbounds [13 x i8], [13 x i8]* %arr1, i32 0, i32 %i
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(1|5)}}
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [13 x i8], align 1
+ %2 = getelementptr inbounds [13 x i8], [13 x i8]* %arr2, i32 0, i32 %i
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
+
+ unreachable
+}
+
+; Check that alloca arguments are not aligned if the GEP is not inbounds
+define void @f7(i8* %dest, i32 %n) {
+entry:
+ ; CHECK-LABEL: f7
+
+ ; CHECK: {{add(.w)? r., sp, #27|sub(.w)? r., r7, #21}}
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [13 x i8], align 1
+ %0 = getelementptr [13 x i8], [13 x i8]* %arr0, i32 0, i32 4
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(10|14)}}
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [13 x i8], align 1
+ %1 = getelementptr [13 x i8], [13 x i8]* %arr1, i32 0, i32 4
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(1|5)}}
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [13 x i8], align 1
+ %2 = getelementptr [13 x i8], [13 x i8]* %arr2, i32 0, i32 4
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
+
+ unreachable
+}
+
+; Check that alloca arguments are not aligned when the offset is past the end of the allocation
+define void @f8(i8* %dest, i32 %n) {
+entry:
+ ; CHECK-LABEL: f8
+
+ ; CHECK: {{add(.w)? r., sp, #27|sub(.w)? r., r7, #21}}
+ ; CHECK-IOS: memmove
+ ; CHECK-DARWIN: memmove
+ ; CHECK-EABI: __aeabi_memmove
+ %arr0 = alloca [13 x i8], align 1
+ %0 = getelementptr inbounds [13 x i8], [13 x i8]* %arr0, i32 0, i32 16
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %0, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(10|14)}}
+ ; CHECK-IOS: memcpy
+ ; CHECK-DARWIN: memcpy
+ ; CHECK-EABI: __aeabi_memcpy
+ %arr1 = alloca [13 x i8], align 1
+ %1 = getelementptr inbounds [13 x i8], [13 x i8]* %arr1, i32 0, i32 16
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %1, i32 %n, i32 0, i1 false)
+
+ ; CHECK: {{add(.w)? r., sp, #(1|5)}}
+ ; CHECK-IOS: mov r1, #1
+ ; CHECK-IOS: memset
+ ; CHECK-DARWIN: movs r1, #1
+ ; CHECK-DARWIN: memset
+ ; CHECK-EABI: mov r2, #1
+ ; CHECK-EABI: __aeabi_memset
+ %arr2 = alloca [13 x i8], align 1
+ %2 = getelementptr inbounds [13 x i8], [13 x i8]* %arr2, i32 0, i32 16
+ call void @llvm.memset.p0i8.i32(i8* %2, i8 1, i32 %n, i32 0, i1 false)
+
+ unreachable
+}
+
+; Check that global variables are aligned if they are large enough, but only if
+; they are defined in this object and don't have an explicit section.
+@arr1 = global [7 x i8] c"\01\02\03\04\05\06\07", align 1
+@arr2 = global [8 x i8] c"\01\02\03\04\05\06\07\08", align 1
+@arr3 = global [7 x i8] c"\01\02\03\04\05\06\07", section "foo,bar", align 1
+@arr4 = global [8 x i8] c"\01\02\03\04\05\06\07\08", section "foo,bar", align 1
+@arr5 = weak global [7 x i8] c"\01\02\03\04\05\06\07", align 1
+@arr6 = weak_odr global [7 x i8] c"\01\02\03\04\05\06\07", align 1
+@arr7 = external global [7 x i8], align 1
+define void @f9(i8* %dest, i32 %n) {
+entry:
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @arr1, i32 0, i32 0), i32 %n, i32 1, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @arr2, i32 0, i32 0), i32 %n, i32 1, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @arr3, i32 0, i32 0), i32 %n, i32 1, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([8 x i8], [8 x i8]* @arr4, i32 0, i32 0), i32 %n, i32 1, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @arr5, i32 0, i32 0), i32 %n, i32 1, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @arr6, i32 0, i32 0), i32 %n, i32 1, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @arr7, i32 0, i32 0), i32 %n, i32 1, i1 false)
+
+ unreachable
+}
+
+; CHECK: {{\.data|\.section.+data}}
+; CHECK-NOT: .align
+; CHECK: arr1:
+; CHECK-IOS: .align 3
+; CHECK-DARWIN: .align 2
+; CHECK-EABI: .align 2
+; CHECK: arr2:
+; CHECK: {{\.section.+foo,bar}}
+; CHECK-NOT: .align
+; CHECK: arr3:
+; CHECK-NOT: .align
+; CHECK: arr4:
+; CHECK: {{\.data|\.section.+data}}
+; CHECK-NOT: .align
+; CHECK: arr5:
+; CHECK-NOT: .align
+; CHECK: arr6:
+; CHECK-NOT: arr7:
+
declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
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