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| ; Test the static branch probability heuristics for error-reporting functions.
| ; RUN: opt < %s -instcombine -S | FileCheck %s
| target 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"
| target triple = "x86_64-unknown-linux-gnu"
|
| %struct._IO_FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct._IO_FILE*, i32, i32, i64, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i64, i32, [20 x i8] }
| %struct._IO_marker = type { %struct._IO_marker*, %struct._IO_FILE*, i32 }
|
| @stdout = external global %struct._IO_FILE*
| @stderr = external global %struct._IO_FILE*
| @.str = private unnamed_addr constant [13 x i8] c"an error: %d\00", align 1
| @.str1 = private unnamed_addr constant [9 x i8] c"an error\00", align 1
|
| define i32 @test1(i32 %a) #0 {
| ; CHECK-LABEL: @test1
| entry:
| %cmp = icmp sgt i32 %a, 8
| br i1 %cmp, label %if.then, label %return
|
| if.then: ; preds = %entry
| %0 = load %struct._IO_FILE*, %struct._IO_FILE** @stderr, align 8
| %call = tail call i32 (%struct._IO_FILE*, i8*, ...) @fprintf(%struct._IO_FILE* %0, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %a) #1
| br label %return
|
| ; CHECK: %call = tail call i32 (%struct._IO_FILE*, i8*, ...) @fprintf(%struct._IO_FILE* %0, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %a) #[[AT1:[0-9]+]]
|
| return: ; preds = %entry, %if.then
| %retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]
| ret i32 %retval.0
| }
|
| declare i32 @fprintf(%struct._IO_FILE* nocapture, i8* nocapture readonly, ...) #1
|
| define i32 @test2(i32 %a) #0 {
| ; CHECK-LABEL: @test2
| entry:
| %cmp = icmp sgt i32 %a, 8
| br i1 %cmp, label %if.then, label %return
|
| if.then: ; preds = %entry
| %0 = load %struct._IO_FILE*, %struct._IO_FILE** @stderr, align 8
| %1 = tail call i64 @fwrite(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str1, i64 0, i64 0), i64 8, i64 1, %struct._IO_FILE* %0)
| br label %return
|
| ; CHECK: tail call i64 @fwrite(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str1, i64 0, i64 0), i64 8, i64 1, %struct._IO_FILE* %0) #[[AT2:[0-9]+]]
|
| return: ; preds = %entry, %if.then
| %retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]
| ret i32 %retval.0
| }
|
| declare i64 @fwrite(i8* nocapture, i64, i64, %struct._IO_FILE* nocapture) #1
|
| define i32 @test3(i32 %a) #0 {
| ; CHECK-LABEL: @test3
| entry:
| %cmp = icmp sgt i32 %a, 8
| br i1 %cmp, label %if.then, label %return
|
| if.then: ; preds = %entry
| %0 = load %struct._IO_FILE*, %struct._IO_FILE** @stdout, align 8
| %1 = tail call i64 @fwrite(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str1, i64 0, i64 0), i64 8, i64 1, %struct._IO_FILE* %0)
| br label %return
|
| ; CHECK-NOT: tail call i64 @fwrite(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str1, i64 0, i64 0), i64 8, i64 1, %struct._IO_FILE* %0) #[[AT2]]
|
| return: ; preds = %entry, %if.then
| %retval.0 = phi i32 [ 1, %if.then ], [ 0, %entry ]
| ret i32 %retval.0
| }
|
| attributes #0 = { nounwind uwtable }
| attributes #1 = { nounwind }
|
| ; CHECK: attributes #[[AT1]] = { cold nounwind }
| ; CHECK: attributes #[[AT2]] = { cold }
|
|
