91 lines
3.8 KiB
LLVM
91 lines
3.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -scalarizer -S -o - | FileCheck %s
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define i16 @f1() {
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; CHECK-LABEL: @f1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_END:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x i16> [[INSERT]], i16 ptrtoint (i16 ()* @f1 to i16), i32 0
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: br i1 undef, label [[FOR_BODY:%.*]], label [[FOR_END]]
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; CHECK: for.end:
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; CHECK-NEXT: [[EXTRACT:%.*]] = phi i16 [ 1, [[ENTRY:%.*]] ], [ undef, [[FOR_COND]] ]
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; CHECK-NEXT: ret i16 [[EXTRACT]]
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;
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entry:
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br label %for.end
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for.body:
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%insert = insertelement <4 x i16> %insert, i16 ptrtoint (i16 () * @f1 to i16), i32 0
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br label %for.cond
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for.cond:
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br i1 undef, label %for.body, label %for.end
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for.end:
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; opt used to hang when scalarizing this code. When scattering %insert we
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; need to analyze the insertelement in the unreachable-from-entry block
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; for.body. Note that the insertelement instruction depends on itself, and
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; this kind of IR is not allowed in reachable-from-entry blocks.
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%phi = phi <4 x i16> [ <i16 1, i16 1, i16 1, i16 1>, %entry ], [ %insert, %for.cond ]
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%extract = extractelement <4 x i16> %phi, i32 0
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ret i16 %extract
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}
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define void @f2() {
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; CHECK-LABEL: @f2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: br i1 undef, label [[IF_THEN:%.*]], label [[IF_END8:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[IF_END8]]
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; CHECK: for.body2:
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; CHECK-NEXT: br i1 undef, label [[FOR_END:%.*]], label [[FOR_INC:%.*]]
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; CHECK: for.end:
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; CHECK-NEXT: br label [[FOR_INC]]
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; CHECK: for.inc:
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; CHECK-NEXT: [[E_SROA_3_2:%.*]] = phi <2 x i64> [ <i64 1, i64 1>, [[FOR_END]] ], [ [[E_SROA_3_2]], [[FOR_BODY2:%.*]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 6, [[FOR_END]] ], [ [[TMP0]], [[FOR_BODY2]] ]
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; CHECK-NEXT: br i1 undef, label [[FOR_BODY2]], label [[FOR_COND1_FOR_END7_CRIT_EDGE:%.*]]
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; CHECK: for.cond1.for.end7_crit_edge:
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; CHECK-NEXT: br label [[IF_END8]]
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; CHECK: if.end8:
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; CHECK-NEXT: [[E_SROA_3_4_I0:%.*]] = phi i64 [ undef, [[FOR_BODY]] ], [ undef, [[FOR_COND1_FOR_END7_CRIT_EDGE]] ], [ undef, [[IF_THEN]] ]
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; CHECK-NEXT: [[E_SROA_3_4_I1:%.*]] = phi i64 [ undef, [[FOR_BODY]] ], [ undef, [[FOR_COND1_FOR_END7_CRIT_EDGE]] ], [ undef, [[IF_THEN]] ]
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; CHECK-NEXT: br label [[FOR_BODY]]
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;
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entry:
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br label %for.body
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for.body: ; preds = %if.end8, %entry
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br i1 undef, label %if.then, label %if.end8
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if.then: ; preds = %for.body
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br label %if.end8
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for.body2: ; preds = %for.inc
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br i1 undef, label %for.end, label %for.inc
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for.end: ; preds = %for.body2
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br label %for.inc
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for.inc: ; preds = %for.end, %for.body2
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%e.sroa.3.2 = phi <2 x i64> [ <i64 1, i64 1>, %for.end ], [ %e.sroa.3.2, %for.body2 ]
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%0 = phi i32 [ 6, %for.end ], [ %0, %for.body2 ]
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br i1 undef, label %for.body2, label %for.cond1.for.end7_crit_edge
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for.cond1.for.end7_crit_edge: ; preds = %for.inc
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br label %if.end8
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if.end8: ; preds = %for.cond1.for.end7_crit_edge, %if.then, %for.body
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; This used to lead to inserted extractelement instructions between the phis
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; in %for.inc.
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; %e.sroa.3.2 is defined in a block that is unreachable from entry so we can
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; safely replace it with undef in the phi defining e.sroa.3.4.
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%e.sroa.3.4 = phi <2 x i64> [ undef, %for.body ], [ %e.sroa.3.2, %for.cond1.for.end7_crit_edge ], [ undef, %if.then ]
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br label %for.body
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}
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