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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes='function(scalarizer)' -S -o - | FileCheck %s
define i16 @f1(i1 %arg) {
; CHECK-LABEL: @f1(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x i16> [[INSERT]], i16 ptrtoint (ptr @f1 to i16), i32 0
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: br i1 %arg, label [[FOR_BODY:%.*]], label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: [[PHI_I0:%.*]] = phi i16 [ 1, [[ENTRY:%.*]] ], [ poison, [[FOR_COND]] ]
; CHECK-NEXT: ret i16 [[PHI_I0]]
;
entry:
br label %for.end
for.body:
%insert = insertelement <4 x i16> %insert, i16 ptrtoint (ptr @f1 to i16), i32 0
br label %for.cond
for.cond:
br i1 %arg, label %for.body, label %for.end
for.end:
; opt used to hang when scalarizing this code. When scattering %insert we
; need to analyze the insertelement in the unreachable-from-entry block
; for.body. Note that the insertelement instruction depends on itself, and
; this kind of IR is not allowed in reachable-from-entry blocks.
%phi = phi <4 x i16> [ <i16 1, i16 1, i16 1, i16 1>, %entry ], [ %insert, %for.cond ]
%extract = extractelement <4 x i16> %phi, i32 0
ret i16 %extract
}
define void @f2(i1 %arg) {
; CHECK-LABEL: @f2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: br i1 %arg, label [[IF_THEN:%.*]], label [[IF_END8:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: for.body2:
; CHECK-NEXT: br i1 %arg, label [[FOR_END:%.*]], label [[FOR_INC:%.*]]
; CHECK: for.end:
; CHECK-NEXT: br label [[FOR_INC]]
; CHECK: for.inc:
; CHECK-NEXT: [[E_SROA_3_2:%.*]] = phi <2 x i64> [ splat (i64 1), [[FOR_END]] ], [ [[E_SROA_3_2]], [[FOR_BODY2:%.*]] ]
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 6, [[FOR_END]] ], [ [[TMP0]], [[FOR_BODY2]] ]
; CHECK-NEXT: br i1 %arg, label [[FOR_BODY2]], label [[FOR_COND1_FOR_END7_CRIT_EDGE:%.*]]
; CHECK: for.cond1.for.end7_crit_edge:
; CHECK-NEXT: br label [[IF_END8]]
; CHECK: if.end8:
; CHECK-NEXT: [[E_SROA_3_4_I0:%.*]] = phi i64 [ undef, [[FOR_BODY]] ], [ poison, [[FOR_COND1_FOR_END7_CRIT_EDGE]] ], [ undef, [[IF_THEN]] ]
; CHECK-NEXT: [[E_SROA_3_4_I1:%.*]] = phi i64 [ undef, [[FOR_BODY]] ], [ poison, [[FOR_COND1_FOR_END7_CRIT_EDGE]] ], [ undef, [[IF_THEN]] ]
; CHECK-NEXT: br label [[FOR_BODY]]
;
entry:
br label %for.body
for.body: ; preds = %if.end8, %entry
br i1 %arg, label %if.then, label %if.end8
if.then: ; preds = %for.body
br label %if.end8
for.body2: ; preds = %for.inc
br i1 %arg, label %for.end, label %for.inc
for.end: ; preds = %for.body2
br label %for.inc
for.inc: ; preds = %for.end, %for.body2
%e.sroa.3.2 = phi <2 x i64> [ <i64 1, i64 1>, %for.end ], [ %e.sroa.3.2, %for.body2 ]
%0 = phi i32 [ 6, %for.end ], [ %0, %for.body2 ]
br i1 %arg, label %for.body2, label %for.cond1.for.end7_crit_edge
for.cond1.for.end7_crit_edge: ; preds = %for.inc
br label %if.end8
if.end8: ; preds = %for.cond1.for.end7_crit_edge, %if.then, %for.body
; This used to lead to inserted extractelement instructions between the phis
; in %for.inc.
; %e.sroa.3.2 is defined in a block that is unreachable from entry so we can
; safely replace it with undef in the phi defining e.sroa.3.4.
%e.sroa.3.4 = phi <2 x i64> [ undef, %for.body ], [ %e.sroa.3.2, %for.cond1.for.end7_crit_edge ], [ undef, %if.then ]
br label %for.body
}
|
