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0b655fec9e
A future commit will change how some of the value names in the IR are generated which causes these tests to break in their current form. The script generates checks with regular expressions so it should be immune. llvm-svn: 317023
59 lines
2.6 KiB
LLVM
59 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -simplifycfg -keep-loops=false -S < %s | FileCheck %s
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; It's not worthwhile to if-convert one of the phi nodes and leave
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; the other behind, because that still requires a branch. If
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; SimplifyCFG if-converts one of the phis, it should do both.
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define i32 @upper_bound(i32* %r, i32 %high, i32 %k) nounwind {
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; CHECK-LABEL: @upper_bound(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[WHILE_COND:%.*]]
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; CHECK: while.cond:
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; CHECK-NEXT: [[HIGH_ADDR_0:%.*]] = phi i32 [ [[HIGH:%.*]], [[ENTRY:%.*]] ], [ [[DIV_HIGH_ADDR_0:%.*]], [[WHILE_BODY:%.*]] ]
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; CHECK-NEXT: [[LOW_0:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[LOW_0_ADD2:%.*]], [[WHILE_BODY]] ]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[LOW_0]], [[HIGH_ADDR_0]]
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; CHECK-NEXT: br i1 [[CMP]], label [[WHILE_BODY]], label [[WHILE_END:%.*]]
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; CHECK: while.body:
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; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LOW_0]], [[HIGH_ADDR_0]]
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; CHECK-NEXT: [[DIV:%.*]] = udiv i32 [[ADD]], 2
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; CHECK-NEXT: [[IDXPROM:%.*]] = zext i32 [[DIV]] to i64
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[R:%.*]], i64 [[IDXPROM]]
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]]
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; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[K:%.*]], [[TMP0]]
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; CHECK-NEXT: [[ADD2:%.*]] = add i32 [[DIV]], 1
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; CHECK-NEXT: [[DIV_HIGH_ADDR_0]] = select i1 [[CMP1]], i32 [[DIV]], i32 [[HIGH_ADDR_0]]
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; CHECK-NEXT: [[LOW_0_ADD2]] = select i1 [[CMP1]], i32 [[LOW_0]], i32 [[ADD2]]
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; CHECK-NEXT: br label [[WHILE_COND]]
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; CHECK: while.end:
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; CHECK-NEXT: ret i32 [[LOW_0]]
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;
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entry:
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br label %while.cond
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while.cond: ; preds = %if.then, %if.else, %entry
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%high.addr.0 = phi i32 [ %high, %entry ], [ %div, %if.then ], [ %high.addr.0, %if.else ]
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%low.0 = phi i32 [ 0, %entry ], [ %low.0, %if.then ], [ %add2, %if.else ]
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%cmp = icmp ult i32 %low.0, %high.addr.0
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br i1 %cmp, label %while.body, label %while.end
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while.body: ; preds = %while.cond
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%add = add i32 %low.0, %high.addr.0
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%div = udiv i32 %add, 2
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%idxprom = zext i32 %div to i64
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%arrayidx = getelementptr inbounds i32, i32* %r, i64 %idxprom
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%0 = load i32, i32* %arrayidx
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%cmp1 = icmp ult i32 %k, %0
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br i1 %cmp1, label %if.then, label %if.else
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if.then: ; preds = %while.body
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br label %while.cond
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if.else: ; preds = %while.body
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%add2 = add i32 %div, 1
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br label %while.cond
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while.end: ; preds = %while.cond
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ret i32 %low.0
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}
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