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774ae973b9
factory functions for the two modes the loop unroller is actually used in in-tree: simplified full-unrolling and the entire thing including partial unrolling. I've also wired these up to nice names so you can express both of these being in a pipeline easily. This is a precursor to actually enabling these parts of the O2 pipeline. Differential Revision: https://reviews.llvm.org/D28897 llvm-svn: 293136
226 lines
5.5 KiB
LLVM
226 lines
5.5 KiB
LLVM
; Check that we don't crash on corner cases.
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; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null
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; RUN: opt < %s -S -passes='require<opt-remark-emit>,loop(unroll-full)' -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=1 -unroll-max-percent-threshold-boost=200 -o /dev/null
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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@known_constant = internal unnamed_addr constant [10 x i32] [i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1], align 16
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define void @foo1() {
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entry:
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br label %for.body
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for.body:
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%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
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%idx = zext i32 undef to i64
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%add.ptr = getelementptr inbounds i64, i64* null, i64 %idx
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%inc = add nuw nsw i64 %phi, 1
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%cmp = icmp ult i64 %inc, 999
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br i1 %cmp, label %for.body, label %for.exit
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for.exit:
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ret void
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}
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define void @foo2() {
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entry:
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br label %for.body
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for.body:
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%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
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%x = getelementptr i32, <4 x i32*> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
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%inc = add nuw nsw i64 %phi, 1
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%cmp = icmp ult i64 %inc, 999
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br i1 %cmp, label %for.body, label %for.exit
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for.exit:
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ret void
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}
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define void @cmp_undef() {
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entry:
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br label %for.body
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for.body: ; preds = %for.inc, %entry
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%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]
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%arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0
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%x1 = load i32, i32* %arrayidx1, align 4
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%cmp = icmp eq i32 %x1, undef
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br i1 %cmp, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%iv.1 = add nuw nsw i64 %iv.0, 1
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%exitcond = icmp eq i64 %iv.1, 10
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc
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ret void
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}
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define void @switch() {
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entry:
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br label %for.body
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for.body:
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%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]
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%arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0
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%x1 = load i32, i32* %arrayidx1, align 4
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switch i32 %x1, label %l1 [
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]
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l1:
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%x2 = add i32 %x1, 2
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br label %for.inc
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for.inc:
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%iv.1 = add nuw nsw i64 %iv.0, 1
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%exitcond = icmp eq i64 %iv.1, 10
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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define <4 x i32> @vec_load() {
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entry:
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br label %for.body
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for.body:
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%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
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%vec_phi = phi <4 x i32> [ <i32 0, i32 0, i32 0, i32 0>, %entry ], [ %r, %for.body ]
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%arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %phi
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%bc = bitcast i32* %arrayidx to <4 x i32>*
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%x = load <4 x i32>, < 4 x i32>* %bc, align 4
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%r = add <4 x i32> %x, %vec_phi
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%inc = add nuw nsw i64 %phi, 1
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%cmp = icmp ult i64 %inc, 999
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br i1 %cmp, label %for.body, label %for.exit
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for.exit:
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ret <4 x i32> %r
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}
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define void @ptrtoint_cast() optsize {
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entry:
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br label %for.body
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for.body:
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br i1 true, label %for.inc, label %if.then
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if.then:
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%arraydecay = getelementptr inbounds [1 x i32], [1 x i32]* null, i64 0, i64 0
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%x = ptrtoint i32* %arraydecay to i64
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br label %for.inc
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for.inc:
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br i1 false, label %for.body, 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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define void @ptrtoint_cast2() {
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entry:
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br i1 false, label %for.body.lr.ph, label %exit
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for.body.lr.ph:
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br label %for.body
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for.body:
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%iv = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
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%offset = getelementptr inbounds float, float* null, i32 3
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%bc = bitcast float* %offset to i64*
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%inc = add nuw nsw i32 %iv, 1
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br i1 false, label %for.body, label %exit
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exit:
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ret void
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}
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@i = external global i32, align 4
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define void @folded_not_to_constantint() {
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entry:
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br label %for.body
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for.body:
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%iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
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%m = phi i32* [ @i, %entry ], [ %m, %for.inc ]
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br i1 undef, label %if.else, label %if.then
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if.then:
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unreachable
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if.else:
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%cmp = icmp ult i32* %m, null
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br i1 %cmp, label %cond.false, label %for.inc
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cond.false:
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unreachable
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for.inc:
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%inc = add nuw nsw i32 %iv, 1
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%cmp2 = icmp ult i32 %inc, 10
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br i1 %cmp2, label %for.body, label %for.end
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for.end:
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ret void
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}
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define void @index_too_large() {
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entry:
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br label %for.body
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for.body:
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%iv = phi i64 [ -73631599, %entry ], [ %iv.next, %for.inc ]
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br i1 undef, label %for.body2, label %for.inc
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for.body2:
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%idx = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv
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%x = load i32, i32* %idx, align 1
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br label %for.inc
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for.inc:
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%iv.next = add nsw i64 %iv, -1
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br i1 undef, label %for.body, label %for.end
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for.end:
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ret void
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}
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define void @cmp_type_mismatch() {
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entry:
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br label %for.header
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for.header:
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br label %for.body
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for.body:
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%d = phi i32* [ null, %for.header ]
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%cmp = icmp eq i32* %d, null
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br i1 undef, label %for.end, label %for.header
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for.end:
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ret void
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}
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define void @load_type_mismatch() {
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entry:
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br label %for.body
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for.body:
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%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.body ]
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%arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0
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%bc = bitcast i32* %arrayidx1 to i64*
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%x1 = load i64, i64* %bc, align 4
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%x2 = add i64 10, %x1
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%iv.1 = add nuw nsw i64 %iv.0, 1
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%exitcond = icmp eq i64 %iv.1, 10
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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