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23c462a8b5
This allows targets to make more decisions about reserved registers after isel. For example, now it should be certain there are calls or stack objects in the frame or not, which could have been introduced by legalization. Patch by Matthias Braun llvm-svn: 363757
35 lines
1.4 KiB
LLVM
35 lines
1.4 KiB
LLVM
; Check that the MVCLoop (memcpy) is marked as clobbering CC, so that it will
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; not be placed betwen two compare and load-on-condition instructions.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -pre-RA-sched=list-ilp \
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; RUN: -print-after=finalize-isel 2>&1 | FileCheck %s
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;
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; CHECK-LABEL: bb.0.bb:
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; CHECK: CLI
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; CHECK: LOCGHI
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; CHECK-LABEL: bb.2.bb:
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; CHECK: MVC
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@.str.35 = external dso_local unnamed_addr constant [9 x i8], align 2
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@func_38.l_1854 = external dso_local unnamed_addr constant [7 x [10 x [3 x i64**]]], align 8
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; Function Attrs: nounwind
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define dso_local signext i32 @main(i32 signext %arg, i8** nocapture readonly %arg1) local_unnamed_addr #0 {
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bb:
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%tmp = load i8, i8* undef, align 1
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%tmp2 = zext i8 %tmp to i32
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%tmp3 = sub nsw i32 0, %tmp2
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%tmp4 = icmp eq i32 %tmp3, 0
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%tmp5 = zext i1 %tmp4 to i32
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 8 undef, i8* align 8 bitcast ([7 x [10 x [3 x i64**]]]* @func_38.l_1854 to i8*), i64 1680, i1 false) #2
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call fastcc void @transparent_crc(i64 undef, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.35, i64 0, i64 0), i32 signext %tmp5)
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unreachable
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}
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; Function Attrs: nounwind
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declare dso_local fastcc void @transparent_crc(i64, i8*, i32 signext) unnamed_addr #0
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; Function Attrs: argmemonly nounwind
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #1
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