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