84 lines · plain
1; RUN: llc %s -enable-machine-outliner=never -mtriple=arm64-apple-darwin -o - | FileCheck %s --check-prefix=DARWIN2; RUN: llc %s -enable-machine-outliner=never -mtriple=arm64-linux-gnu -o - | FileCheck %s --check-prefix=LINUX3; <rdar://problem/14199482> ARM64: Calls to bzero() replaced with calls to memset()4 5declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1)6 7; CHECK-LABEL: fct1:8; Constant size memset to zero.9; DARWIN: {{b|bl}} _bzero10; LINUX: {{b|bl}} memset11define void @fct1(ptr nocapture %ptr) minsize {12 tail call void @llvm.memset.p0.i64(ptr %ptr, i8 0, i64 256, i1 false)13 ret void14}15 16; CHECK-LABEL: fct3:17; Variable size memset to zero.18; DARWIN: {{b|bl}} _bzero19; LINUX: {{b|bl}} memset20define void @fct3(ptr nocapture %ptr, i32 %unknown) minsize {21 %conv = sext i32 %unknown to i6422 tail call void @llvm.memset.p0.i64(ptr %ptr, i8 0, i64 %conv, i1 false)23 ret void24}25 26; CHECK-LABEL: fct4:27; Variable size checked memset to zero.28; DARWIN: {{b|bl}} _bzero29; LINUX: {{b|bl}} memset30define void @fct4(ptr %ptr) minsize {31 %tmp = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 false)32 %call = tail call ptr @__memset_chk(ptr %ptr, i32 0, i64 256, i64 %tmp)33 ret void34}35 36declare ptr @__memset_chk(ptr, i32, i64, i64)37 38declare i64 @llvm.objectsize.i64(ptr, i1)39 40; CHECK-LABEL: fct6:41; Size = unknown, change.42; DARWIN: {{b|bl}} _bzero43; LINUX: {{b|bl}} memset44define void @fct6(ptr %ptr, i32 %unknown) minsize {45 %conv = sext i32 %unknown to i6446 %tmp = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 false)47 %call = tail call ptr @__memset_chk(ptr %ptr, i32 0, i64 %conv, i64 %tmp)48 ret void49}50 51; Next functions check that memset is not turned into bzero52; when the set constant is non-zero, whatever the given size.53 54; CHECK-LABEL: fct7:55; memset with something that is not a zero, no change.56; DARWIN: {{b|bl}} _memset57; LINUX: {{b|bl}} memset58define void @fct7(ptr %ptr) minsize {59 %tmp = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 false)60 %call = tail call ptr @__memset_chk(ptr %ptr, i32 1, i64 256, i64 %tmp)61 ret void62}63 64; CHECK-LABEL: fct8:65; memset with something that is not a zero, no change.66; DARWIN: {{b|bl}} _memset67; LINUX: {{b|bl}} memset68define void @fct8(ptr %ptr) minsize {69 %tmp = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 false)70 %call = tail call ptr @__memset_chk(ptr %ptr, i32 1, i64 257, i64 %tmp)71 ret void72}73 74; CHECK-LABEL: fct9:75; memset with something that is not a zero, no change.76; DARWIN: {{b|bl}} _memset77; LINUX: {{b|bl}} memset78define void @fct9(ptr %ptr, i32 %unknown) minsize {79 %conv = sext i32 %unknown to i6480 %tmp = tail call i64 @llvm.objectsize.i64(ptr %ptr, i1 false)81 %call = tail call ptr @__memset_chk(ptr %ptr, i32 1, i64 %conv, i64 %tmp)82 ret void83}84