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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -verify-scev -passes="print<scalar-evolution>,loop-simplifycfg" -S %s 2>&1 | FileCheck %s
; print<scalar-evolution> is used to compute SCEVs for all values & loops in
; the function
define void @test_pr58262(ptr %src) {
; CHECK-LABEL: @test_pr58262(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP_1_HEADER:%.*]]
; CHECK: loop.1.header.loopexit:
; CHECK-NEXT: br label [[LOOP_1_HEADER]]
; CHECK: loop.1.header:
; CHECK-NEXT: switch i32 0, label [[LOOP_1_HEADER_SPLIT:%.*]] [
; CHECK-NEXT: i32 1, label [[LOOP_1_HEADER_LOOPEXIT:%.*]]
; CHECK-NEXT: ]
; CHECK: loop.1.header.split:
; CHECK-NEXT: br label [[LOOP_2_HEADER:%.*]]
; CHECK: loop.2.header:
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: [[L:%.*]] = load i16, ptr [[SRC:%.*]], align 1
; CHECK-NEXT: [[C:%.*]] = icmp ult i16 0, [[L]]
; CHECK-NEXT: br i1 [[C]], label [[TRAP:%.*]], label [[LOOP_2_LATCH:%.*]]
; CHECK: loop.2.latch:
; CHECK-NEXT: br label [[LOOP_2_HEADER]]
; CHECK: trap:
; CHECK-NEXT: ret void
;
entry:
br label %loop.1.header
loop.1.header:
br label %loop.2.header
loop.2.header:
br i1 true, label %then, label %loop.1.header
then:
call void @clobber()
%l = load i16, ptr %src, align 1
%c = icmp ult i16 0, %l
br i1 %c, label %trap, label %loop.2.latch
loop.2.latch:
br label %loop.2.header
trap: ; preds = %for.body
ret void
}
declare void @clobber()
|
