1; RUN: opt < %s -passes=adce -disable-output 2; RUN: opt < %s -passes=adce -adce-remove-loops -S | FileCheck %s 3 4 %FILE = type { i32, ptr, ptr, i8, i8, i32, i32, i32 } 5 %spec_fd_t = type { i32, i32, i32, ptr } 6@__iob = external global [20 x %FILE] ; <ptr> [#uses=1] 7@dbglvl = global i32 4 ; <ptr> [#uses=3] 8@spec_fd = external global [3 x %spec_fd_t] ; <ptr> [#uses=4] 9@.LC9 = internal global [34 x i8] c"spec_read: fd=%d, > MAX_SPEC_FD!\0A\00" ; <ptr> [#uses=1] 10@.LC10 = internal global [4 x i8] c"EOF\00" ; <ptr> [#uses=1] 11@.LC11 = internal global [4 x i8] c"%d\0A\00" ; <ptr> [#uses=1] 12@.LC12 = internal global [17 x i8] c"spec_getc: %d = \00" ; <ptr> [#uses=1] 13 14declare i32 @fprintf(ptr, ptr, ...) 15 16declare void @exit(i32) 17 18declare i32 @remove(ptr) 19 20declare i32 @fputc(i32, ptr) 21 22declare i32 @fwrite(ptr, i32, i32, ptr) 23 24declare void @perror(ptr) 25 26define i32 @spec_getc(i32 %fd) { 27 %reg109 = load i32, ptr @dbglvl ; <i32> [#uses=1] 28 %cond266 = icmp sle i32 %reg109, 4 ; <i1> [#uses=1] 29; CHECK: br label %bb3 30 br i1 %cond266, label %bb3, label %bb2 31 32bb2: ; preds = %0 33 %cast273 = getelementptr [17 x i8], ptr @.LC12, i64 0, i64 0 ; <ptr> [#uses=0] 34 br label %bb3 35 36bb3: ; preds = %bb2, %0 37 %cond267 = icmp sle i32 %fd, 3 ; <i1> [#uses=0] 38 br label %bb5 39 40bb4: ; No predecessors! 41 %reg111 = getelementptr [20 x %FILE], ptr @__iob, i64 0, i64 1, i32 3 ; <ptr> [#uses=1] 42 %cast274 = getelementptr [34 x i8], ptr @.LC9, i64 0, i64 0 ; <ptr> [#uses=0] 43 call void @exit( i32 1 ) 44 br label %UnifiedExitNode 45 46bb5: ; preds = %bb3 47 %reg107-idxcast1 = sext i32 %fd to i64 ; <i64> [#uses=2] 48 %reg107-idxcast2 = sext i32 %fd to i64 ; <i64> [#uses=1] 49 %reg1311 = getelementptr [3 x %spec_fd_t], ptr @spec_fd, i64 0, i64 %reg107-idxcast2 ; <ptr> [#uses=1] 50 %idx1 = getelementptr [3 x %spec_fd_t], ptr @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2 ; <ptr> [#uses=1] 51 %reg1321 = load i32, ptr %idx1 ; <i32> [#uses=3] 52 %idx2 = getelementptr %spec_fd_t, ptr %reg1311, i64 0, i32 1 ; <ptr> [#uses=1] 53 %reg1331 = load i32, ptr %idx2 ; <i32> [#uses=1] 54 %cond270 = icmp slt i32 %reg1321, %reg1331 ; <i1> [#uses=1] 55 br i1 %cond270, label %bb9, label %bb6 56 57bb6: ; preds = %bb5 58 %reg134 = load i32, ptr @dbglvl ; <i32> [#uses=1] 59 %cond271 = icmp sle i32 %reg134, 4 ; <i1> [#uses=1] 60; CHECK: br label %bb8 61 br i1 %cond271, label %bb8, label %bb7 62 63bb7: ; preds = %bb6 64 %cast277 = getelementptr [4 x i8], ptr @.LC10, i64 0, i64 0 ; <ptr> [#uses=0] 65 br label %bb8 66 67bb8: ; preds = %bb7, %bb6 68 br label %UnifiedExitNode 69 70bb9: ; preds = %bb5 71 %reg107-idxcast3 = sext i32 %fd to i64 ; <i64> [#uses=1] 72 %idx3 = getelementptr [3 x %spec_fd_t], ptr @spec_fd, i64 0, i64 %reg107-idxcast3, i32 3 ; <ptr> [#uses=1] 73 %reg1601 = load ptr, ptr %idx3 ; <ptr> [#uses=1] 74 %reg132-idxcast1 = sext i32 %reg1321 to i64 ; <i64> [#uses=1] 75 %idx4 = getelementptr i8, ptr %reg1601, i64 %reg132-idxcast1 ; <ptr> [#uses=1] 76 %reg1621 = load i8, ptr %idx4 ; <i8> [#uses=2] 77 %cast108 = zext i8 %reg1621 to i64 ; <i64> [#uses=0] 78 %reg157 = add i32 %reg1321, 1 ; <i32> [#uses=1] 79 %idx5 = getelementptr [3 x %spec_fd_t], ptr @spec_fd, i64 0, i64 %reg107-idxcast1, i32 2 ; <ptr> [#uses=1] 80 store i32 %reg157, ptr %idx5 81 %reg163 = load i32, ptr @dbglvl ; <i32> [#uses=1] 82 %cond272 = icmp sle i32 %reg163, 4 ; <i1> [#uses=1] 83; CHECK: br label %bb11 84 br i1 %cond272, label %bb11, label %bb10 85 86bb10: ; preds = %bb9 87 %cast279 = getelementptr [4 x i8], ptr @.LC11, i64 0, i64 0 ; <ptr> [#uses=0] 88 br label %bb11 89 90bb11: ; preds = %bb10, %bb9 91 %cast291 = zext i8 %reg1621 to i32 ; <i32> [#uses=1] 92 br label %UnifiedExitNode 93 94UnifiedExitNode: ; preds = %bb11, %bb8, %bb4 95 %UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ] ; <i32> [#uses=1] 96 ret i32 %UnifiedRetVal 97} 98 99declare i32 @puts(ptr) 100 101declare i32 @printf(ptr, ...) 102