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https://github.com/c64scene-ar/llvm-6502.git
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16717a7c56
PHI nodes which were matched, rather than climbing up the original PHI node's operands to rediscover PHI nodes for recording, since the PHI nodes found that are not necessarily part of the matched set. This fixes rdar://10589171. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149654 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
3.2 KiB
LLVM
78 lines
3.2 KiB
LLVM
; RUN: opt -S -scalarrepl-ssa < %s | FileCheck %s
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; rdar://10589171
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%struct.foo = type { i32, i32 }
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@.str = private unnamed_addr constant [6 x i8] c"x=%d\0A\00", align 1
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define i32 @main(i32 %argc, i8** nocapture %argv) nounwind uwtable {
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entry:
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%f = alloca %struct.foo, align 4
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%x.i = getelementptr inbounds %struct.foo* %f, i64 0, i32 0
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store i32 1, i32* %x.i, align 4
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%y.i = getelementptr inbounds %struct.foo* %f, i64 0, i32 1
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br label %while.cond.i
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; CHECK: while.cond.i:
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; CHECK-NEXT: %tmp = phi i32 [ 1, %entry ], [ %tmp2, %while.cond.backedge.i ]
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; CHECK-NEXT: %pos.0.i = phi i32 [ 1, %entry ], [ %xtmp.i, %while.cond.backedge.i ]
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; CHECK-NEXT: %left.0.i = phi i32 [ 1, %entry ], [ %dec.i, %while.cond.backedge.i ]
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; CHECK-NOT: phi
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while.cond.i: ; preds = %while.cond.backedge.i, %entry
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%tmp = phi i32 [ 1, %entry ], [ %tmp2, %while.cond.backedge.i ]
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%pos.0.i = phi i32 [ 1, %entry ], [ %xtmp.i, %while.cond.backedge.i ]
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%left.0.i = phi i32 [ 1, %entry ], [ %dec.i, %while.cond.backedge.i ]
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%cmp.i = icmp sgt i32 %left.0.i, 0
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br i1 %cmp.i, label %while.body.i, label %while.cond.i.func.exit_crit_edge
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while.cond.i.func.exit_crit_edge: ; preds = %while.cond.i
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br label %func.exit
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while.body.i: ; preds = %while.cond.i
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%dec.i = add nsw i32 %left.0.i, -1
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switch i32 1, label %while.body.i.func.exit_crit_edge [
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i32 0, label %while.cond.backedge.i
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i32 1, label %sw.bb.i
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]
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while.body.i.func.exit_crit_edge: ; preds = %while.body.i
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br label %func.exit
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sw.bb.i: ; preds = %while.body.i
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%cmp2.i = icmp eq i32 %tmp, 1
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br i1 %cmp2.i, label %if.then.i, label %if.end.i
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if.then.i: ; preds = %sw.bb.i
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store i32 %pos.0.i, i32* %x.i, align 4
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br label %if.end.i
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; CHECK: if.end.i:
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; CHECK-NEXT: %tmp1 = phi i32 [ %pos.0.i, %if.then.i ], [ %tmp, %sw.bb.i ]
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; CHECK-NOT: phi
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if.end.i: ; preds = %if.then.i, %sw.bb.i
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%tmp1 = phi i32 [ %pos.0.i, %if.then.i ], [ %tmp, %sw.bb.i ]
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store i32 %tmp1, i32* %y.i, align 4
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br label %while.cond.backedge.i
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; CHECK: while.cond.backedge.i:
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; CHECK-NEXT: %tmp2 = phi i32 [ %tmp1, %if.end.i ], [ %tmp, %while.body.i ]
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; CHECK-NOT: phi
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while.cond.backedge.i: ; preds = %if.end.i, %while.body.i
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%tmp2 = phi i32 [ %tmp1, %if.end.i ], [ %tmp, %while.body.i ]
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%xtmp.i = add i32 %pos.0.i, 1
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br label %while.cond.i
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; CHECK: func.exit:
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; CHECK-NOT: load
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; CHECK: %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([6 x i8]* @.str, i64 0, i64 0), i32 %tmp) nounwind
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func.exit: ; preds = %while.body.i.func.exit_crit_edge, %while.cond.i.func.exit_crit_edge
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%tmp3 = load i32* %x.i, align 4
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%call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([6 x i8]* @.str, i64 0, i64 0), i32 %tmp3) nounwind
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ret i32 0
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}
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declare i32 @printf(i8* nocapture, ...) nounwind
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