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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Test that the printf library call simplifier works correctly.
;
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
; RUN: opt < %s -mtriple xcore-xmos-elf -passes=instcombine -S | FileCheck %s -check-prefix=CHECK-IPRINTF
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
@hello_world = constant [13 x i8] c"hello world\0A\00"
@h = constant [2 x i8] c"h\00"
@h2 = constant [3 x i8] c"%%\00"
@percent = constant [2 x i8] c"%\00"
@percent_c = constant [3 x i8] c"%c\00"
@percent_d = constant [3 x i8] c"%d\00"
@percent_f = constant [3 x i8] c"%f\00"
@percent_s = constant [4 x i8] c"%s\0A\00"
@empty = constant [1 x i8] c"\00"
declare i32 @printf(ptr, ...)
; Check printf("") -> noop.
define void @test_simplify1() {
; CHECK-LABEL: @test_simplify1(
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify1(
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @empty)
ret void
}
; Check printf("x") -> putchar('x'), even for '%'.
define void @test_simplify2() {
; CHECK-LABEL: @test_simplify2(
; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 104)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify2(
; CHECK-IPRINTF-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 104)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @h)
ret void
}
; Special case: printf("%%") -> putchar('%').
define void @test_simplify2b() {
; CHECK-LABEL: @test_simplify2b(
; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 37)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify2b(
; CHECK-IPRINTF-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 37)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @h2)
ret void
}
define void @test_simplify3() {
; CHECK-LABEL: @test_simplify3(
; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 37)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify3(
; CHECK-IPRINTF-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 37)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @percent)
ret void
}
; Check printf("foo\n") -> puts("foo").
define void @test_simplify4() {
; CHECK-LABEL: @test_simplify4(
; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(ptr nonnull dereferenceable(1) @str)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify4(
; CHECK-IPRINTF-NEXT: [[PUTS:%.*]] = call i32 @puts(ptr nonnull dereferenceable(1) @str)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @hello_world)
ret void
}
; Check printf("%c", chr) -> putchar(chr).
define void @test_simplify5() {
; CHECK-LABEL: @test_simplify5(
; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 104)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify5(
; CHECK-IPRINTF-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 104)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @percent_c, i8 104)
ret void
}
; Check printf("%s\n", str) -> puts(str).
define void @test_simplify6() {
; CHECK-LABEL: @test_simplify6(
; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(ptr nonnull dereferenceable(1) @hello_world)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify6(
; CHECK-IPRINTF-NEXT: [[PUTS:%.*]] = call i32 @puts(ptr nonnull dereferenceable(1) @hello_world)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @percent_s, ptr @hello_world)
ret void
}
; Check printf(format, ...) -> iprintf(format, ...) if no floating point.
define void @test_simplify7() {
; CHECK-LABEL: @test_simplify7(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @percent_d, i32 187)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_simplify7(
; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @iprintf(ptr noundef nonnull dereferenceable(1) @percent_d, i32 187)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @percent_d, i32 187)
ret void
}
define void @test_no_simplify1() {
; CHECK-LABEL: @test_no_simplify1(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @percent_f, double 1.870000e+00)
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_no_simplify1(
; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @percent_f, double 1.870000e+00)
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr @percent_f, double 1.87)
ret void
}
define void @test_no_simplify2(ptr %fmt, double %d) {
; CHECK-LABEL: @test_no_simplify2(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) [[FMT:%.*]], double [[D:%.*]])
; CHECK-NEXT: ret void
;
; CHECK-IPRINTF-LABEL: @test_no_simplify2(
; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) [[FMT:%.*]], double [[D:%.*]])
; CHECK-IPRINTF-NEXT: ret void
;
call i32 (ptr, ...) @printf(ptr %fmt, double %d)
ret void
}
define i32 @test_no_simplify3() {
; CHECK-LABEL: @test_no_simplify3(
; CHECK-NEXT: [[RET:%.*]] = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @h)
; CHECK-NEXT: ret i32 [[RET]]
;
; CHECK-IPRINTF-LABEL: @test_no_simplify3(
; CHECK-IPRINTF-NEXT: [[RET:%.*]] = call i32 (ptr, ...) @iprintf(ptr noundef nonnull dereferenceable(1) @h)
; CHECK-IPRINTF-NEXT: ret i32 [[RET]]
;
%ret = call i32 (ptr, ...) @printf(ptr @h)
ret i32 %ret
}
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