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llvm-mirror/test/CodeGen/X86/pr37916.ll
Taewook Oh f53020f046 Reland "b19ec1eb3d0c [BPI] Improve unreachable/ColdCall heurstics to handle loops."
Summary: b19ec1eb3d0c has been reverted because of the test failures
with PowerPC targets. This patch addresses the issues from the previous
commit.

Test Plan: ninja check-all. Confirmed that CodeGen/PowerPC/pr36292.ll
and CodeGen/PowerPC/sms-cpy-1.ll pass

Subscribers: llvm-commits
2019-12-02 10:28:40 -08:00

44 lines
1.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=i386-unknown-linux-gnu %s -o - | FileCheck %s
@f = external local_unnamed_addr global i64*, align 4
@a = external global i64, align 8
define void @fn1() local_unnamed_addr {
; CHECK-LABEL: fn1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: .LBB0_1: # %if.end
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movl a+4, %eax
; CHECK-NEXT: orl a, %eax
; CHECK-NEXT: movl $a, f
; CHECK-NEXT: je .LBB0_3
; CHECK-NEXT: # %bb.2: # %if.end
; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: .LBB0_3: # %cond.false
entry:
br label %if.end
if.end: ; preds = %cond.end, %entry
br label %if.then7
if.then7: ; preds = %if.end
store i64* @a, i64** @f, align 4
%0 = load i64*, i64** @f, align 4
%1 = load i64, i64* %0, align 4
%tobool12 = icmp ne i64 %1, 0
%2 = load i64, i64* @a, align 8
%tobool13 = icmp ne i64 %2, 0
%3 = and i1 %tobool12, %tobool13
%tobool14.demorgan = and i1 %tobool12, %tobool13
br i1 %tobool14.demorgan, label %cond.end, label %cond.false
cond.false: ; preds = %if.then7
unreachable
cond.end: ; preds = %if.then7
%conv17 = sext i1 %3 to i8
br label %if.end
}