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4741c1e622
addSchedBarrierDeps() is supposed to add use operands to the ExitSU node. The current implementation adds uses for calls/barrier instruction and the MBB live-outs in all other cases. The use operands of conditional jump instructions were missed. Also added code to macrofusion to set the latencies between nodes to zero to avoid problems with the fusing nodes lingering around in the pending list now. Differential Revision: https://reviews.llvm.org/D25140 llvm-svn: 286544
47 lines
1.1 KiB
LLVM
47 lines
1.1 KiB
LLVM
; RUN: llc -mtriple=aarch64-linux-gnu -verify-machineinstrs -o - %s | FileCheck %s
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; LSR used to pick a sub-optimal solution due to the target responding
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; conservatively to isLegalAddImmediate for negative values.
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declare void @foo(i32)
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define void @test(i32 %px) {
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; CHECK_LABEL: test:
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; CHECK_LABEL: %entry
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; CHECK: subs
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; CHECK-NEXT: csel
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entry:
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%sub = add nsw i32 %px, -1
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%cmp = icmp slt i32 %px, 1
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%.sub = select i1 %cmp, i32 0, i32 %sub
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br label %for.body
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for.body:
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; CHECK_LABEL: %for.body
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; CHECK: cmp
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; CHECK-NEXT: b.eq
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; CHECK-LABEL: %if.then3
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%x.015 = phi i32 [ %inc, %for.inc ], [ %.sub, %entry ]
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%cmp2 = icmp eq i32 %x.015, %px
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br i1 %cmp2, label %for.inc, label %if.then3
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if.then3:
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tail call void @foo(i32 %x.015)
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br label %for.inc
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for.inc:
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; CHECK_LABEL: %for.inc
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; CHECK: cmp
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; CHECK-NEXT: add
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; CHECK-NEXT: b.le
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; CHECK_LABEL: %for.cond.cleanup
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%inc = add nsw i32 %x.015, 1
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%cmp1 = icmp sgt i32 %x.015, %px
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br i1 %cmp1, label %for.cond.cleanup.loopexit, label %for.body
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for.cond.cleanup.loopexit:
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br label %for.cond.cleanup
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for.cond.cleanup:
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ret void
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}
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