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1; Test the static branch probability heuristics for error-reporting functions.2; RUN: opt < %s -passes=instcombine -S | FileCheck -enable-var-scope %s3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"4target triple = "x86_64-unknown-linux-gnu"5 6%struct._IO_FILE = type { i32, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i64, i16, i8, [1 x i8], ptr, i64, ptr, ptr, ptr, ptr, i64, i32, [20 x i8] }7%struct._IO_marker = type { ptr, ptr, i32 }8 9@stdout = external global ptr10@stderr = external global ptr11@.str = private unnamed_addr constant [13 x i8] c"an error: %d\00", align 112@.str1 = private unnamed_addr constant [9 x i8] c"an error\00", align 113 14define i32 @test1(i32 %a) #0 {15; CHECK-LABEL: @test116entry:17 %cmp = icmp sgt i32 %a, 818 br i1 %cmp, label %if.then, label %return19 20if.then: ; preds = %entry21 %0 = load ptr, ptr @stderr, align 822 %call = tail call i32 (ptr, ptr, ...) @fprintf(ptr %0, ptr @.str, i32 %a) #123 br label %return24 25; CHECK: %call = tail call i32 (ptr, ptr, ...) @fprintf(ptr %0, ptr nonnull @.str, i32 %a) #[[$AT1:[0-9]+]]26 27return: ; preds = %entry, %if.then28 %retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]29 ret i32 %retval.030}31 32declare i32 @fprintf(ptr nocapture, ptr nocapture readonly, ...) #133 34define i32 @test2(i32 %a) #0 {35; CHECK-LABEL: @test236entry:37 %cmp = icmp sgt i32 %a, 838 br i1 %cmp, label %if.then, label %return39 40if.then: ; preds = %entry41 %0 = load ptr, ptr @stderr, align 842 %1 = tail call i64 @fwrite(ptr @.str1, i64 8, i64 1, ptr %0)43 br label %return44 45; CHECK: tail call i64 @fwrite(ptr nonnull @.str1, i64 8, i64 1, ptr %0) #[[$AT2:[0-9]+]]46 47return: ; preds = %entry, %if.then48 %retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]49 ret i32 %retval.050}51 52declare i64 @fwrite(ptr nocapture, i64, i64, ptr nocapture) #153 54define i32 @test3(i32 %a) #0 {55; CHECK-LABEL: @test356entry:57 %cmp = icmp sgt i32 %a, 858 br i1 %cmp, label %if.then, label %return59 60if.then: ; preds = %entry61 %0 = load ptr, ptr @stdout, align 862 %1 = tail call i64 @fwrite(ptr @.str1, i64 8, i64 1, ptr %0)63 br label %return64 65; CHECK-NOT: tail call i64 @fwrite(ptr @.str1, i64 8, i64 1, ptr %0) #[[$AT2]]66 67return: ; preds = %entry, %if.then68 %retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]69 ret i32 %retval.070}71 72attributes #0 = { nounwind uwtable }73attributes #1 = { nounwind }74 75; CHECK: attributes #[[$AT1]] = { cold nounwind }76; CHECK: attributes #[[$AT2]] = { cold }77 78