deab451e7a
Remove support for the icmp and fcmp constant expressions. This is part of: https://discourse.llvm.org/t/rfc-remove-most-constant-expressions/63179 As usual, many of the updated tests will no longer test what they were originally intended to -- this is hard to preserve when constant expressions get removed, and in many cases just impossible as the existence of a specific kind of constant expression was the cause of the issue in the first place.
52 lines
1.9 KiB
LLVM
52 lines
1.9 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64"
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target triple = "powerpc64le-unknown-linux-gnu"
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@c = external unnamed_addr global i32, align 4
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@b = external global [1 x i32], align 4
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; Function Attrs: nounwind
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define void @fn2() #0 align 4 {
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br i1 undef, label %.lr.ph, label %4
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; We used to crash because a bad DAGCombine was creating i32-typed SETCC nodes,
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; even when crbits are enabled.
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; CHECK-LABEL: @fn2
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; CHECK: blr
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.lr.ph: ; preds = %0
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br i1 undef, label %.lr.ph.split, label %.preheader
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.preheader: ; preds = %.preheader, %.lr.ph
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br i1 undef, label %.lr.ph.split, label %.preheader
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.lr.ph.split: ; preds = %.preheader, %.lr.ph
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br i1 undef, label %._crit_edge, label %.lr.ph.split.split
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.lr.ph.split.split: ; preds = %.lr.ph.split.split, %.lr.ph.split
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%1 = phi i32 [ %2, %.lr.ph.split.split ], [ undef, %.lr.ph.split ]
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%cmp = icmp eq ptr @c, @b
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%constexpr = select i1 %cmp, i1 true, i1 false
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%constexpr1 = zext i1 %constexpr to i32
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%constexpr2 = and i32 %constexpr1, %constexpr1
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%constexpr3 = and i32 %constexpr2, %constexpr1
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%constexpr4 = and i32 %constexpr3, %constexpr1
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%constexpr5 = and i32 %constexpr4, %constexpr1
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%constexpr6 = and i32 %constexpr5, %constexpr1
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%constexpr7 = and i32 %constexpr6, %constexpr1
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%constexpr8 = and i32 %constexpr7, %constexpr1
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%2 = and i32 %1, %constexpr8
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%3 = icmp slt i32 undef, 4
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br i1 %3, label %.lr.ph.split.split, label %._crit_edge
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._crit_edge: ; preds = %.lr.ph.split.split, %.lr.ph.split
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%.lcssa = phi i32 [ undef, %.lr.ph.split ], [ %2, %.lr.ph.split.split ]
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br label %4
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4: ; preds = %._crit_edge, %0
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ret void
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}
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attributes #0 = { nounwind "target-cpu"="ppc64le" }
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