如何获取generator标准的输出

[ma-h-m]

我在tester/function_test2020/09_if.sysu.c中，使用自己的代码，生成IR指令如下：

; ModuleID = '-'
source_filename = "-"

@a = global i32 0

define i32 @main() {
entry:
  %retval = alloca i32, align 4
  store i32 0, i32* %retval, align 4
  store i32 10, i32* @a, align 4
  %0 = load i32, i32* @a, align 4
  %cmp = icmp sgt i32 %0, 0
  br i1 %cmp, label %if.then, label %if.else

if.then:                                          ; preds = %entry
  store i32 1, i32* %retval, align 4
  br label %return
  br label %if.end

return:                                           ; preds = %if.else, %if.then
  %1 = load i32, i32* %retval, align 4
  ret i32 %1

if.else:                                          ; preds = %entry
  store i32 0, i32* %retval, align 4
  br label %return
  br label %if.end

if.end:                                           ; preds = %if.else, %if.then
  ret i32 0
}

使用Wiki实验三的( export PATH=$HOME/sysu/bin:$PATH CPATH=$HOME/sysu/include:$CPATH LIBRARY_PATH=$HOME/sysu/lib:$LIBRARY_PATH LD_LIBRARY_PATH=$HOME/sysu/lib:$LD_LIBRARY_PATH && clang -E tester/test.sysu.c | clang -cc1 -O0 -S -emit-llvm ) 生成结果如下：

; ModuleID = '-'
source_filename = "-"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-linux-gnu"

@a = global i32 0, align 4

; Function Attrs: noinline nounwind optnone
define i32 @main() #0 {
entry:
  %retval = alloca i32, align 4
  store i32 0, i32* %retval, align 4
  store i32 10, i32* @a, align 4
  %0 = load i32, i32* @a, align 4
  %cmp = icmp sgt i32 %0, 0
  br i1 %cmp, label %if.then, label %if.else

if.then:                                          ; preds = %entry
  store i32 1, i32* %retval, align 4
  br label %return

if.else:                                          ; preds = %entry
  store i32 0, i32* %retval, align 4
  br label %return

return:                                           ; preds = %if.else, %if.then
  %1 = load i32, i32* %retval, align 4
  ret i32 %1
}

在测试脚本中，报错如下：

[17/648] tester/function_test2020/09_if.sysu.c
Error reading bitcode file: -
/root/sysu/bin/sysu-optimizer: <stdin>:21:3: error: instruction expected to be numbered '%2'
  %1 = load i32, i32* %retval, align 4
  ^

但我在标准输出中并没有看到%2的出现。 请问用什么工具可以看到标准的输出？