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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -codegenprepare -S -mtriple=x86_64-linux < %s | FileCheck %s
define i32 @test1(ptr %d) nounwind {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[L:%.*]] = load i8, ptr [[D:%.*]], align 1
; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i8 [[L]], 0
; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[TMP0]] to i32
; CHECK-NEXT: ret i32 [[CONV]]
;
entry:
%l = load i8, ptr %d
%cmp = icmp eq i8 %l, 0
br i1 %cmp, label %exit, label %if.end
if.end:
%gep = getelementptr i8, ptr %d, i32 42
%call = call i64 @foo(ptr %gep) nounwind readonly willreturn
%cmp2 = icmp ne i64 %call, 0
call void @llvm.assume(i1 %cmp2)
br label %exit
exit:
%conv = zext i1 %cmp to i32
ret i32 %conv
}
define i32 @test2(i32 %N) nounwind {
; CHECK-LABEL: @test2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[HEADER:%.*]]
; CHECK: header:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV2_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV_INC]] = add i32 [[IV]], 1
; CHECK-NEXT: [[IV2_INC]] = add i32 [[IV2]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[IV]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[HEADER]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[IV]]
;
entry:
br label %header
header:
%iv = phi i32 [0, %entry], [%iv.inc, %header]
%iv2 = phi i32 [0, %entry], [%iv2.inc, %header]
%iv.inc = add i32 %iv, 1
%iv2.inc = add i32 %iv2, 1
%cmp = icmp eq i32 %iv, %N
%cmp2 = icmp sle i32 %iv2, %N
call void @llvm.assume(i1 %cmp2)
br i1 %cmp, label %exit, label %header
exit:
ret i32 %iv
}
define i32 @test3(i32 %N) nounwind {
; CHECK-LABEL: @test3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[HEADER:%.*]]
; CHECK: header:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV2_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV_INC]] = add i32 [[IV]], 1
; CHECK-NEXT: [[IV2_INC]] = add i32 [[IV2]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[IV]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[HEADER]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[IV]]
;
entry:
br label %header
header:
%iv = phi i32 [0, %entry], [%iv.inc, %header]
%iv2 = phi i32 [0, %entry], [%iv2.inc, %header]
%iv.inc = add i32 %iv, 1
%iv2.inc = add i32 %iv2, 1
%cmp = icmp eq i32 %iv, %N
%cmp2 = icmp sle i32 %iv2.inc, %N
call void @llvm.assume(i1 %cmp2)
br i1 %cmp, label %exit, label %header
exit:
ret i32 %iv
}
; Two assumes case.
define i32 @test4(i32 %N) nounwind {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[HEADER:%.*]]
; CHECK: header:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV2_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV_INC]] = add i32 [[IV]], 1
; CHECK-NEXT: [[IV2_INC]] = add i32 [[IV2]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[IV]], [[N:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[EXIT:%.*]], label [[HEADER]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[IV]]
;
entry:
br label %header
header:
%iv = phi i32 [0, %entry], [%iv.inc, %header]
%iv2 = phi i32 [0, %entry], [%iv2.inc, %header]
%iv.inc = add i32 %iv, 1
%iv2.inc = add i32 %iv2, 1
%cmp = icmp eq i32 %iv, %N
%cmp2 = icmp sle i32 %iv2.inc, %N
call void @llvm.assume(i1 %cmp2)
%cmp3 = icmp sge i32 %iv2.inc, 0
call void @llvm.assume(i1 %cmp3)
br i1 %cmp, label %exit, label %header
exit:
ret i32 %iv
}
; phi is used in assume and in compare.
define i32 @test5(i32 %N, i32 %M) nounwind {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[HEADER:%.*]]
; CHECK: header:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV2:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[IV2_INC:%.*]], [[HEADER]] ]
; CHECK-NEXT: [[IV_INC]] = add i32 [[IV]], 1
; CHECK-NEXT: [[IV2_INC]] = add i32 [[IV2]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[IV]], [[N:%.*]]
; CHECK-NEXT: [[CMP3:%.*]] = icmp sge i32 [[IV2_INC]], [[M:%.*]]
; CHECK-NEXT: [[CMP4:%.*]] = and i1 [[CMP]], [[CMP3]]
; CHECK-NEXT: br i1 [[CMP4]], label [[EXIT:%.*]], label [[HEADER]]
; CHECK: exit:
; CHECK-NEXT: ret i32 [[IV]]
;
entry:
br label %header
header:
%iv = phi i32 [0, %entry], [%iv.inc, %header]
%iv2 = phi i32 [0, %entry], [%iv2.inc, %header]
%iv.inc = add i32 %iv, 1
%iv2.inc = add i32 %iv2, 1
%cmp = icmp eq i32 %iv, %N
%cmp2 = icmp sle i32 %iv2.inc, %N
call void @llvm.assume(i1 %cmp2)
%cmp3 = icmp sge i32 %iv2.inc, %M
%cmp4 = and i1 %cmp, %cmp3
br i1 %cmp4, label %exit, label %header
exit:
ret i32 %iv
}
declare i64 @foo(ptr) nounwind readonly willreturn
declare void @llvm.assume(i1 noundef) nounwind willreturn
|
