; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-- | FileCheck %s
; This tests some cases where BT must not be generated. See also bt.ll.
; Fixes 20040709-[12].c in gcc testsuite.
define void @test2(i32 %x, i32 %n) nounwind {
; CHECK-LABEL: test2:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne .LBB0_2
; CHECK-NEXT: # %bb.1: # %bb
; CHECK-NEXT: calll foo@PLT
; CHECK-NEXT: .LBB0_2: # %UnifiedReturnBlock
; CHECK-NEXT: retl
entry:
%tmp1 = and i32 %x, 1
%tmp2 = urem i32 %tmp1, 15
%tmp3 = and i32 %tmp2, 1 ; <i32> [#uses=1]
%tmp4 = icmp eq i32 %tmp3, %tmp2 ; <i1> [#uses=1]
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
bb: ; preds = %entry
call void @foo()
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}
define void @test3(i32 %x, i32 %n) nounwind {
; CHECK-LABEL: test3:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne .LBB1_2
; CHECK-NEXT: # %bb.1: # %bb
; CHECK-NEXT: calll foo@PLT
; CHECK-NEXT: .LBB1_2: # %UnifiedReturnBlock
; CHECK-NEXT: retl
entry:
%tmp1 = and i32 %x, 1
%tmp2 = urem i32 %tmp1, 15
%tmp3 = and i32 %tmp2, 1 ; <i32> [#uses=1]
%tmp4 = icmp eq i32 %tmp2, %tmp3 ; <i1> [#uses=1]
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
bb: ; preds = %entry
call void @foo()
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}
define void @test4(i32 %x, i32 %n) nounwind {
; CHECK-LABEL: test4:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne .LBB2_2
; CHECK-NEXT: # %bb.1: # %bb
; CHECK-NEXT: calll foo@PLT
; CHECK-NEXT: .LBB2_2: # %UnifiedReturnBlock
; CHECK-NEXT: retl
entry:
%tmp1 = and i32 %x, 1
%tmp2 = urem i32 %tmp1, 15
%tmp3 = and i32 %tmp2, 1 ; <i32> [#uses=1]
%tmp4 = icmp ne i32 %tmp2, %tmp3 ; <i1> [#uses=1]
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
bb: ; preds = %entry
call void @foo()
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}
define void @test5(i32 %x, i32 %n) nounwind {
; CHECK-LABEL: test5:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne .LBB3_2
; CHECK-NEXT: # %bb.1: # %bb
; CHECK-NEXT: calll foo@PLT
; CHECK-NEXT: .LBB3_2: # %UnifiedReturnBlock
; CHECK-NEXT: retl
entry:
%tmp1 = and i32 %x, 1
%tmp2 = urem i32 %tmp1, 15
%tmp3 = and i32 %tmp2, 1 ; <i32> [#uses=1]
%tmp4 = icmp ne i32 %tmp2, %tmp3 ; <i1> [#uses=1]
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
bb: ; preds = %entry
call void @foo()
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}
declare void @foo()
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