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1; RUN: opt < %s -passes=adce -S | FileCheck %s2; RUN: opt < %s -passes=adce -adce-remove-loops -S | FileCheck %s3 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; CHECKL br label %bb330 br i1 %cond266, label %bb3, label %bb231 32bb2: ; preds = %033 %cast273 = getelementptr [17 x i8], ptr @.LC12, i64 0, i64 0 ; <ptr> [#uses=0]34 br label %bb335 36bb3: ; preds = %bb2, %037 %cond267 = icmp sle i32 %fd, 3 ; <i1> [#uses=1]38 br i1 %cond267, label %bb5, label %bb439 40bb4: ; preds = %bb341 %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 %UnifiedExitNode45 46bb5: ; preds = %bb347 %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 %bb656 57bb6: ; preds = %bb558 %reg134 = load i32, ptr @dbglvl ; <i32> [#uses=1]59 %cond271 = icmp sle i32 %reg134, 4 ; <i1> [#uses=1]60; CHECK: br label %bb861 br i1 %cond271, label %bb8, label %bb762 63bb7: ; preds = %bb664 %cast277 = getelementptr [4 x i8], ptr @.LC10, i64 0, i64 0 ; <ptr> [#uses=0]65 br label %bb866 67bb8: ; preds = %bb7, %bb668 br label %UnifiedExitNode69 70bb9: ; preds = %bb571 %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 %idx581 %reg163 = load i32, ptr @dbglvl ; <i32> [#uses=1]82 %cond272 = icmp sle i32 %reg163, 4 ; <i1> [#uses=1]83; CHECK: br label %bb1184 br i1 %cond272, label %bb11, label %bb1085 86bb10: ; preds = %bb987 %cast279 = getelementptr [4 x i8], ptr @.LC11, i64 0, i64 0 ; <ptr> [#uses=0]88 br label %bb1189 90bb11: ; preds = %bb10, %bb991 %cast291 = zext i8 %reg1621 to i32 ; <i32> [#uses=1]92 br label %UnifiedExitNode93 94UnifiedExitNode: ; preds = %bb11, %bb8, %bb495 %UnifiedRetVal = phi i32 [ 42, %bb4 ], [ -1, %bb8 ], [ %cast291, %bb11 ] ; <i32> [#uses=1]96 ret i32 %UnifiedRetVal97}98 99declare i32 @puts(ptr)100 101declare i32 @printf(ptr, ...)102