fast16labels.ll
2.69 KB
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; Test that -dfsan-fast-16-labels mode uses inline ORs rather than calling
; __dfsan_union or __dfsan_union_load.
; RUN: opt < %s -dfsan -dfsan-fast-16-labels -S | FileCheck %s --implicit-check-not="call{{.*}}__dfsan_union"
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"
define i8 @add(i8 %a, i8 %b) {
; CHECK-LABEL: define i8 @"dfs$add"
; CHECK-DAG: %[[ALABEL:.*]] = load{{.*}}__dfsan_arg_tls, i64 0, i64 0
; CHECK-DAG: %[[BLABEL:.*]] = load{{.*}}__dfsan_arg_tls, i64 0, i64 1
; CHECK: %[[ADDLABEL:.*]] = or i16 %[[ALABEL]], %[[BLABEL]]
; CHECK: add i8
; CHECK: store i16 %[[ADDLABEL]], i16* @__dfsan_retval_tls
; CHECK: ret i8
%c = add i8 %a, %b
ret i8 %c
}
define i8 @load8(i8* %p) {
; CHECK-LABEL: define i8 @"dfs$load8"
; CHECK: load i16, i16*
; CHECK: ptrtoint i8* {{.*}} to i64
; CHECK: and i64
; CHECK: mul i64
; CHECK: inttoptr i64
; CHECK: load i16, i16*
; CHECK: or i16
; CHECK: load i8, i8*
; CHECK: store i16 {{.*}} @__dfsan_retval_tls
; CHECK: ret i8
%a = load i8, i8* %p
ret i8 %a
}
define i16 @load16(i16* %p) {
; CHECK-LABEL: define i16 @"dfs$load16"
; CHECK: ptrtoint i16*
; CHECK: and i64
; CHECK: mul i64
; CHECK: inttoptr i64 {{.*}} i16*
; CHECK: getelementptr i16
; CHECK: load i16, i16*
; CHECK: load i16, i16*
; CHECK: or i16
; CHECK: or i16
; CHECK: load i16, i16*
; CHECK: store {{.*}} @__dfsan_retval_tls
; CHECK: ret i16
%a = load i16, i16* %p
ret i16 %a
}
define i32 @load32(i32* %p) {
; CHECK-LABEL: define i32 @"dfs$load32"
; CHECK: ptrtoint i32*
; CHECK: and i64
; CHECK: mul i64
; CHECK: inttoptr i64 {{.*}} i16*
; CHECK: bitcast i16* {{.*}} i64*
; CHECK: load i64, i64*
; CHECK: lshr i64 {{.*}}, 32
; CHECK: or i64
; CHECK: lshr i64 {{.*}}, 16
; CHECK: or i64
; CHECK: trunc i64 {{.*}} i16
; CHECK: or i16
; CHECK: load i32, i32*
; CHECK: store i16 {{.*}} @__dfsan_retval_tls
; CHECK: ret i32
%a = load i32, i32* %p
ret i32 %a
}
define i64 @load64(i64* %p) {
; CHECK-LABEL: define i64 @"dfs$load64"
; CHECK: ptrtoint i64*
; CHECK: and i64
; CHECK: mul i64
; CHECK: inttoptr i64 {{.*}} i16*
; CHECK: bitcast i16* {{.*}} i64*
; CHECK: load i64, i64*
; CHECK: getelementptr i64, i64* {{.*}}, i64 1
; CHECK: load i64, i64*
; CHECK: or i64
; CHECK: lshr i64 {{.*}}, 32
; CHECK: or i64
; CHECK: lshr i64 {{.*}}, 16
; CHECK: or i64
; CHECK: trunc i64 {{.*}} i16
; CHECK: or i16
; CHECK: load i64, i64*
; CHECK: store i16 {{.*}} @__dfsan_retval_tls
; CHECK: ret i64
%a = load i64, i64* %p
ret i64 %a
}