106 lines
4.0 KiB
LLVM
106 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
|
|
|
|
@.str = private unnamed_addr constant [27 x i8] c"abcdefghijklmnopqrstuvwxyz\00", align 1
|
|
@.str.1 = private unnamed_addr constant [2 x i8] c"\0D\0A", align 1
|
|
|
|
declare ptr @strchr(ptr, i32)
|
|
declare ptr @memchr(ptr, i32, i64)
|
|
|
|
define zeroext i1 @strchr_to_memchr_n_equals_len(i32 %c) {
|
|
; CHECK-LABEL: @strchr_to_memchr_n_equals_len(
|
|
; CHECK-NEXT: [[MEMCHR:%.*]] = tail call ptr @memchr(ptr noundef nonnull dereferenceable(1) @.str, i32 [[C:%.*]], i64 27)
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[MEMCHR]], null
|
|
; CHECK-NEXT: ret i1 [[CMP]]
|
|
;
|
|
%call = tail call ptr @strchr(ptr nonnull dereferenceable(27) @.str, i32 %c)
|
|
%cmp = icmp ne ptr %call, null
|
|
ret i1 %cmp
|
|
}
|
|
|
|
define zeroext i1 @memchr_n_equals_len(i32 %c) {
|
|
; CHECK-LABEL: @memchr_n_equals_len(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[C:%.*]] to i8
|
|
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8 [[TMP1]], 10
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i8 [[TMP1]], 13
|
|
; CHECK-NEXT: [[CMP:%.*]] = and i1 [[TMP3]], [[TMP2]]
|
|
; CHECK-NEXT: ret i1 [[CMP]]
|
|
;
|
|
%call = tail call ptr @memchr(ptr nonnull dereferenceable(3) @.str.1, i32 %c, i64 2)
|
|
%cmp = icmp eq ptr %call, null
|
|
ret i1 %cmp
|
|
}
|
|
|
|
define zeroext i1 @memchr_n_less_than_len(i32 %c) {
|
|
; CHECK-LABEL: @memchr_n_less_than_len(
|
|
; CHECK-NEXT: [[CALL:%.*]] = tail call ptr @memchr(ptr noundef nonnull dereferenceable(1) @.str, i32 [[C:%.*]], i64 15)
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[CALL]], null
|
|
; CHECK-NEXT: ret i1 [[CMP]]
|
|
;
|
|
%call = tail call ptr @memchr(ptr @.str, i32 %c, i64 15)
|
|
%cmp = icmp ne ptr %call, null
|
|
ret i1 %cmp
|
|
}
|
|
|
|
|
|
define zeroext i1 @memchr_n_more_than_len(i32 %c) {
|
|
; CHECK-LABEL: @memchr_n_more_than_len(
|
|
; CHECK-NEXT: [[CALL:%.*]] = tail call ptr @memchr(ptr noundef nonnull dereferenceable(1) @.str, i32 [[C:%.*]], i64 30)
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[CALL]], null
|
|
; CHECK-NEXT: ret i1 [[CMP]]
|
|
;
|
|
%call = tail call ptr @memchr(ptr @.str, i32 %c, i64 30)
|
|
%cmp = icmp ne ptr %call, null
|
|
ret i1 %cmp
|
|
}
|
|
|
|
; Negative test - no comparison with zero
|
|
|
|
define ptr @memchr_no_zero_cmp(i32 %c) {
|
|
; CHECK-LABEL: @memchr_no_zero_cmp(
|
|
; CHECK-NEXT: [[MEMCHR:%.*]] = tail call ptr @memchr(ptr noundef nonnull dereferenceable(1) @.str, i32 [[C:%.*]], i64 27)
|
|
; CHECK-NEXT: ret ptr [[MEMCHR]]
|
|
;
|
|
%call = tail call ptr @strchr(ptr nonnull dereferenceable(27) @.str, i32 %c)
|
|
ret ptr %call
|
|
}
|
|
|
|
define ptr @memchr_no_zero_cmp2(i32 %c) {
|
|
; CHECK-LABEL: @memchr_no_zero_cmp2(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[C:%.*]] to i8
|
|
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8 [[TMP1]], 10
|
|
; CHECK-NEXT: [[MEMCHR_SEL1:%.*]] = select i1 [[TMP2]], ptr getelementptr inbounds ([2 x i8], ptr @.str.1, i64 0, i64 1), ptr null
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i8 [[TMP1]], 13
|
|
; CHECK-NEXT: [[MEMCHR_SEL2:%.*]] = select i1 [[TMP3]], ptr @.str.1, ptr [[MEMCHR_SEL1]]
|
|
; CHECK-NEXT: ret ptr [[MEMCHR_SEL2]]
|
|
;
|
|
%call = tail call ptr @strchr(ptr nonnull dereferenceable(3) @.str.1, i32 %c)
|
|
ret ptr %call
|
|
}
|
|
|
|
; Negative test - opt for size
|
|
|
|
define zeroext i1 @memchr_n_equals_len_minsize(i32 %c) minsize {
|
|
; CHECK-LABEL: @memchr_n_equals_len_minsize(
|
|
; CHECK-NEXT: [[MEMCHR:%.*]] = tail call ptr @memchr(ptr noundef nonnull dereferenceable(1) @.str, i32 [[C:%.*]], i64 27)
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[MEMCHR]], null
|
|
; CHECK-NEXT: ret i1 [[CMP]]
|
|
;
|
|
%call = tail call ptr @strchr(ptr nonnull dereferenceable(27) @.str, i32 %c)
|
|
%cmp = icmp ne ptr %call, null
|
|
ret i1 %cmp
|
|
}
|
|
|
|
define zeroext i1 @memchr_n_equals_len2_minsize(i32 %c) minsize {
|
|
; CHECK-LABEL: @memchr_n_equals_len2_minsize(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[C:%.*]] to i8
|
|
; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8 [[TMP1]], 10
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i8 [[TMP1]], 13
|
|
; CHECK-NEXT: [[CMP:%.*]] = and i1 [[TMP3]], [[TMP2]]
|
|
; CHECK-NEXT: ret i1 [[CMP]]
|
|
;
|
|
%call = tail call ptr @memchr(ptr nonnull dereferenceable(3) @.str.1, i32 %c, i64 2)
|
|
%cmp = icmp eq ptr %call, null
|
|
ret i1 %cmp
|
|
}
|